Tuesday, November 26, 2019
An introduction to R C Sherriff and to World War 1 and what life was really like in the trenches Essays
An introduction to R C Sherriff and to World War 1 and what life was really like in the trenches Essays An introduction to R C Sherriff and to World War 1 and what life was really like in the trenches Paper An introduction to R C Sherriff and to World War 1 and what life was really like in the trenches Paper Essay Topic: Literature The First World War was a time of trauma and devastation. Many lives were lost, and in his play, Journeys End, R.C.Sherriff tries to effectively portray the havoc that World War I wreaked. R.C.Sherriff Robert Cedric Sherriff was born in 1896 and was educated at Kingston Grammar School primarily, until he moved to New College, Oxford. After completing his education, R.C.Sherriff entered his fathers insurance business. Shortly after the outbreak of the war, R.C.Sherriff joined the British army as a captain in the East Surrey regiment. To be a captain, you must attend a public school. The first time R.C.Sherriff applied for enlistment in the army as a captain, he was refused, for his school was not on the list of acceptable public schools, however, when people started to die, and captains were becoming scarce, R.C.Sherriff was accepted into the role of captain. During the war, R.C.Sherriff made himself a book of memoirs about his life in the trenches. These memoirs eventually (about eight years later) became the basis for R.C.Sherriffs first play, Journeys End. After the war, R.C.Sherriff continued working for his fathers business for several years as a claims adjuster. It was because of an interest in amateur theatricals amongst other reasons that R.C.Sherriff decided to try his hand at writing. After many rejections, Journeys End was given a single Sunday evening performance by The Incorporated Stage Society, an amateur theatre company, in 1928. In Journeys End debut performance, Laurence Olivier played Stanhope. The performance went so well; that G.B.Shaw was adamant that Journeys End should be performed at the Savoy Theatre, London. The play was such a success that from being given a single Sunday evening performance, it went to become an International success and gave over 600 performances over the period of two years, and tickets had to be booked months in advance. The success of Journeys End enabled R.C.Sherriff to become a full time writer where he wrote other hits, such as: Badgers Green, Windfall, St. Helena, Miss Mabel, Home at Seven, The White Carnation, and The Long Sunset. R.C.Sherriff also wrote screenplays such as The Invisible Man, Goodbye Mr. Chips, The Four Feathers, Lady Hamilton, Odd Man Out, Quartet, No Highway and The Dam Busters. An autobiography was published in 1968, called No Leading Lady After many years of writing, R.C.Sherriff finally passed away in 1975 at the age of 79. World War I The First World War was triggered on June 28th, 1914, when Serb, Gavrilo Princip, assassinated the heir to the throne of Austria-hungary, Archduke Franz Ferdinand. Austria-hungary blamed Serbia and declared war, Russia said they would defend Serbia, while Germans told Russia not to defend Serbia, but Russia refused Germany, so the Germans declared war on Russia. Germany started moving its army towards France, so France put out a warning that Germany may invade. Germany then declares war on France, and invades Belgium. Britain orders Germany to retreat from Belgium, but the Germans refused, so Britain declared war on the Germans. Austria-hungary then declares war on Russia. Britain and Germany had other, non European, countries in their empires, which were also brought into the war, which turned the war into a bitter battle where people of all nations were killed. To start off with, people believe that they would be fighting the glorious war, which would last no longer than Christmas 1914. When recruiting stations opened in Britain, men came flooding in to join the army because they believed they were fighting for King and country, and that the war would be over so quickly that if they did not join up straight away, they would miss their chance to be part of the glorious cause. Christmas 1914 came and the war was still being fought ferociously with no sign of it coming to an end. Many people had died and many others had been wounded. Volunteers were becoming fewer and fewer as more about the war began to leak out. Finally, in 1916, conscription was introduced, so every healthy man between 18 and 41 had to fight. The war had become even more ferocious and bloody. More people were dying every day, and on one day, the 1st July 1916, over one million people died at the battle of the Somme. After the Somme, the Germans never really recovered, which led to them surrendering in 1918. Millions of people died during World War 1, but others, including R.C.Sherriff lived to tell people what really happened. After the end of the war, and well into the mid 1920s people did not talk about the war, they were just glad that it was over. After many years people did eventually start talking about the war again, but in terms of reality, not the terms of propaganda. R.C.Sherriff decided to use his journal that he had made in the trenches to write a play of the reality of the life of the officers in the war. He based the characters on people from his own life as a captain in the British army. His truth about life in the war was what made the play such a great success, because people, who had finally come to terms with the loss of family and friends, wanted to know what the life in the war was really like, not the luxury that it was when being advertised as by the government. The play went well, and G. B. Shaw was adamant that it should be performed at the Savoy Theatre. Just over a month after the original performance took place, a showing was put on at the Savoy on the 21st January 1929, produced by Maurice Browne. The Savoy Theatres production of Journeys End was so successful that it made over 600 performances in two years and tickets were sold out months in advance. What is the setting of Journeys End? R.C.Sherriff used war for the theme of his play, because the members of his rowing club were male, and there were no females in the war. Sherriff set his play in a trench dugout, near St. Quentins. The play is about the few days leading up to the Kaiserschlact, the Germans final large offensive. The characters know that dying is inevitable so instead of complaining, they do not mention death; they avoid talking about any issue to do with the war. An example of this is on page 70 just before Osborne and Raleigh make the raid on the German trenches. Raleigh is a relatively new officer and is rather excited about being picked to make the raid, so talks about nothing but the raid. Osborne is a more experienced officer and is trying to avoid talking about the raid as we can see when he goes off on a different subject at every available opportunity. In the end he starts reciting Lewis Carrolls poem The Walrus said. On the line of: and whether pigs have wings, Osborne says were off, lets talk about pigs. This shows how much he wants to avoid talking about the war. The officers also talk about their homes, and what they would do if they were there. When talking about their homes, the officers never talk about them in a bad way, because they would much prefer to be at home, than fighting the war, however they are unable to be at home with loved ones, so the men talk about their homes and pretend and wish that they were there. Another subject that the men tried to avoid was death. This was so they were not afraid of seeing people killed, knowing that their turn would come soon enough. When someone had died, instead of confronting the issue, the officers would tell the men that the dead person had gone west. The reason that the officers said this was so the men were not too scared to go over the parapet of the trench into no-mans land, when it was time for them to make an attack. The trenches were not the cleanest places for the men or officers to be. This is portrayed when Trotter says, have your revolver to shoot rats, showing that the dugout and trenches have rats in them, and rats like to live in dirty places. It would have been difficult for R. C. Sherriff to show this on stage, because the director could not have had live rats running about on stage, but he may have had squeaking and scuffling on a soundtrack in the background. This would create an image in the audiences mind, even though they would not be able to see the rats, or any other creatures inhabiting the trenches and dugouts. Differences between the original Journeys End and the 1995 BBC production: In the original Journeys End, the director would not have been able to show certain scenes on the stage, such as it would not be possible to have live lice or rats running around on stage, so this would have had to been shown through the characters speech, and through a soundtrack that would be played in the background. The play is completely staged in the dugout, and although the characters go up into the trench, the audience never get to see it. In this way the audience do not see the raid, where Osborne dies, or any of the other characters dying at the end of the play, although we do see the dugout collapse on an already dead Raleigh. It is probably a good thing that Journeys End was shown only in the dugout, for it would be impossible to show the dead bodies and mud, that was sometimes knee deep, on the stage. Although there were drawbacks of having Journeys End produced on stage, such as not being able to have rats running about, or not being able to show much detail of the dugout, there were also many advantages such as dim and flashing light effects which would create the idea of having shells, grenades, and other explosive items blowing the trench to bits. A soundtrack would also play to create different sound effects including rats scuffling about and squeaking, explosives blowing up and shots being fired, all of which would have been very common in World War 1.
Saturday, November 23, 2019
Titanium Chemical & Physical Properties
Titanium Chemical & Physical Properties Titanium is a strong metal used in human implants, aircraft, and many other products. Here are facts about this useful element: Basic Facts Titanium Atomic Number: 22Symbol: TiAtomic weight: 47.88Discovery: William Gregor 1791 (England)Electron configuration: [Ar] 4s2 3d2Word origin: Latin titans: in mythology, the first sons of Earth Isotopes There are 26 known isotopes of titanium ranging from Ti-38 to Ti-63. Titanium has five stable isotopes with atomic masses 46-50. The most abundant isotope is Ti-48, accounting for 73.8% of all natural titanium. Properties Titanium has a melting point of 1660 /- 10à °C, boiling point of 3287à °C, specific gravity of 4.54, with a valence of 2, 3, or 4. Pure titanium is a lustrous white metal with low density, high strength, and high corrosion resistance. It is resistant to dilute sulfuric and hydrochloric acids, moist chlorine gas, most organic acids, and chloride solutions. Titanium is only ductile when it is free of oxygen. Titanium burns in air and is the only element that burns in nitrogen. Titanium is dimorphic, with the hexagonal a form slowly changing to the cubic b form around 880à °C. The metal combines with oxygen at red heat temperatures and with chlorine at 550à °C. Titanium is as strong as steel, but it is 45% lighter. The metal is 60% heavier than aluminum, but it is twice as strong. Titanium metal is considered to be physiologically inert. Pure titanium dioxide is reasonably clear, with an extremely high index of refraction and an optical dispersion higher than that of a diamond. Natural titanium becomes highly radioactive upon bombardment with deuterons. Uses Titanium is important for alloying with aluminum, molybdenum, iron, manganese, and other metals. Titanium alloys are used in situations where lightweight strength and ability to withstand temperature extremes are required (e.g., aerospace applications). Titanium may be used in desalination plants. The metal is frequently used for components which must be exposed to seawater. A titanium anode coated with platinum may be used to provide cathodic corrosion protection from seawater. Because it is inert in the body, titanium metal has surgical applications. Titanium dioxide is used to make man-made gemstones, although the resulting stone is relatively soft. The asterism of star sapphires and rubies is a result of the presence of TiO2. Titanium dioxide is used in house paint and artist paint. The paint is permanent and provides good coverage. It is an excellent reflector of infrared radiation. The paint is also used in solar observatories. Titanium oxide pigments account for the largest use of the element. Titanium oxide is used in some cosmetics to disperse light. Titanium tetrachloride is used to iridize glass. Since the compound fumes strongly in air, it is also used to produce smoke screens. Sources Titanium is the 9th most abundant element in the earths crust. It is almost always found in igneous rocks. It occurs in rutile, ilmenite, sphene, and many iron ores and titanates. Titanium is found in coal ash, plants, and in the human body. Titanium is found in the sun and in meteorites. Rocks from the Apollo 17 mission to the moon contained up to 12.1% TiO2. Rocks from earlier missions showed lower percentages of titanium dioxide. Titanium oxide bands are seen in spectra of M-type stars. In 1946, Kroll showed that titanium could be produced commercially by reducing titanium tetrachloride with magnesium. Physical Data Element Classification: Transition MetalDensity (g/cc): 4.54Melting Point (K): 1933Boiling Point (K): 3560Appearance: Shiny, dark-gray metalAtomic Radius (pm): 147Atomic Volume (cc/mol): 10.6Covalent Radius (pm): 132Ionic Radius: 68 (4e) 94 (2e)Specific Heat (20à °C J/g mol): 0.523Fusion Heat (kJ/mol): 18.8Evaporation Heat (kJ/mol): 422.6Debye Temperature (K): 380.00Pauling Negativity Number: 1.54First Ionizing Energy (kJ/mol): 657.8Oxidation States: 4, 3Lattice Structure: 1.588Lattice Constant (Ãâ¦): 2.950CAS Registry Number: 7440-32-6 Trivia Titanium was discovered in a black sand known as ilmenite. Ilmenite is a mixture of iron oxides and titanium oxides.William Gregor was the pastor of Mannacan parish when he discovered titanium. He named his new metal manaccanite.The German chemist Martin Klaproth rediscovered Gregors new metal and named it titanium after the Titans, Greek mythological beings of the Earth. The name titanium was preferred and ultimately adopted by other chemists but acknowledged Gregor as the original discoverer.Pure titanium metal was not isolated until 1910 by Matthew Hunter119 years after its discovery.Approximately 95% of all titanium is used in the production of titanium dioxide, TiO2. Titanium dioxide is an extremely bright white pigment used in paints, plastics, toothpaste, and paper.Titanium is used in medical procedures because it is non-toxic and non-reactive in the body. References Los Alamos National Laboratory (2001)Crescent Chemical Company (2001)Langes Handbook of Chemistry (1952)CRC Handbook of Chemistry Physics (18th Ed.) International Atomic Energy Agency ENSDF database (Oct 2010)
Thursday, November 21, 2019
Discuss Jan Gossaerts treatment of the classical nude figure Essay
Discuss Jan Gossaerts treatment of the classical nude figure - Essay Example ddition, in 1508, he visited Rome and returned with visions of bare flesh, erotic vigor and Adam and Eve in the exact transition from naked to almost nude. This pleased his patron Philip of Burgundy who asked him to make portraits of girls for his walls. However, not everybody was pleased with the explicit portraits of Adam and Eve such as the diarist John Evelyn, and they started criticizing Gossaertââ¬â¢s work. Nevertheless, Gossaert continued to make more nude figures despite the criticism and his exhibition has received more than eighty works from all over the world. This paper will discuss John Gossaertââ¬â¢s treatment of classical nude figure in the renaissance art of the period1400-1550. The admiration for Gossaertââ¬â¢s intriguing works of art from Van Mander and Durer make it frustrating that there is quite a few drawings and painting that can be linked to him. He mostly worked alone although is said to have collaborated with a few other landscape painters and other artists such as Gerald David. According to Elkins (2008; p.42), Gossaert excelled particularly in making single panel paintings and portraits, which were about half of his work. Most of his work involved biblical and devotional themes such as those of the Virgin and Child, Adam and Eve, and some episode from the Passion of Christ among others (Grà ¶ssinger, 1997; P. 13). He also introduced mythological themes, which had nude figures with high eroticism. However, his treatment of nude figures was not limited to mythological themes only but was also essential in his devotional and biblical themes such as the drawings and paintings of the Virgin and Child and Adam and Eve. The biblical theme of Adam and Eve of 1520 shows the influence of Rome on Gossaertââ¬â¢s work. The painting gave Gossaert an opportunity to express the male and female nudes at a life size scale in some of his paintings. He impacts a biblical story of the origin of knowledge of sex through the two figures of Adam and Eve entangled in
Tuesday, November 19, 2019
It for my eco class Essay Example | Topics and Well Written Essays - 500 words
It for my eco class - Essay Example This is correct because the First Amendment prohibition against Congress making laws abridging speech does not exempt corporate speech. A potential danger of distinguishing corporate speech from free speech is that it places a limit on free speech. This is a danger because limiting constitutional rights is the same as questioning the integrity of the document and implying that the rights can be selectively applied (Polsby 23). On the other hand, a con of the Supreme Courtââ¬â¢s ruling is that it has in a way made it possible for corporations to buy elections because it has opened elections to undue corporate influence over the election process. Corporations bring people together and give them tremendous power and influence that is more than that of individual voters. Another dimension to the rulingââ¬â¢s risk of opening the election to undue corporate influence is the potential for foreign corporate influence (Wilks 67). This risk is imminent especially because of the fact that foreign entities and persons own many corporations in the United States. Allowing foreign corporate influence on the elections of the United States is like creating a lee way for these foreign entities and individuals to support and endorse regimes which support their agenda even if it is not meant to benefit Americans (Smith 36). My opinion on this matter is that despite the advantages that come with this Court decision, it has serious negative implications that cannot be overlooked. Allowing corporations to fund certain political candidates compromises the efficacy of the outcomes of elections. This is because it will make voters feel that their preferred candidate did not win or lose the election justly. This is because voters reckon that corporations have more access to capital than they have and as such the outcomes of elections will represent the voice of corporations more than
Sunday, November 17, 2019
United States and Authoritarian Patriotism Essay Example for Free
United States and Authoritarian Patriotism Essay In the article Politics and Patriotism in Education, Joel Westheimer made a clear distinction of what it means to follow ââ¬Å"authoritarian patriotismâ⬠and ââ¬Å"democratic patriotism.â⬠The author defines authoritarian patriotism as the belief that oneââ¬â¢s country is inherently superior to others and nonquestioning loyalty to ones country, leaders and support them unconditionally. On the opposing side Westheimer defines democratic patriotism as the belief that a nationââ¬â¢s ideals are worthy of respect and admiration and the questioning deliberative overall care for the people of society based on particular principles. Westheimer felt the need to clarify the distinction of the two forms of patriotism because it seems as though patriotism is beginning to be forced upon the people and primarily the students, and if people even second guess the governmentââ¬â¢s decisions they will be condemned by his or her peers and colleagues. Throughout the article there were several examples of the wrongful punishment subjected upon teachers for giving their children a different perspective and each time they were treated like outcast and forced to reinstate everything if they wanted to keep their job. It is clear to say that Westheimer placed these examples in the article to show how this is no longer the land of the free if people are being forced to present themselves as patriotic and believe that America can do no wrong. It seems as if once 9/11 happened, it was like a gateway event for governmental officials to introduce the practice of patriotism to students. There were multiple bills passed in multiple states designating patriotic practices and allocating funding for courses specifically designed to inform students of why it is good to be an American. It seems as if the author believes the authoritarian patriotism is becoming more popularly practiced in schools is because the government made it mandatory to learn about how ââ¬Å"goodâ⬠America is, and if you choose to believe otherwise you will be punished in one form or another. The perfect example for Authoritarian patriotism in the article was when the 17 year old David form Colorado was suspended for posting flyers about having a peaceful rally against the war in Iraq. This situation makes one think, how can one love thy country if the country is opposed to constructive criticism? Or how can one love thy county if the very thing America was found on, in regards to life and liberty for all, does not apply to decision making for the taxpaying citizens? After reading this article I truly believe in what Westheimer was saying, because whenever you force a way of thinking or believing, it becomes less effective. We as Americans will no longer love our country because we really love our country, instead we will love our country because we have no other choice or else we will be punished. I also believe that the government was very conniving in terms of introducing this authoritarian patriotism right after 9/11 when everyone was hurt and vulnerable. I cannot help but think that they purposely waited until something tragic happened to inflict this way of thinking onto to children because they know as time progresses the more people began to question authority, and by instilling this mentality while they are young, you do not have to worry about them while they are older and have a developed a mature conscience. While reading, I also instantly related the authoritarian patriotism to old Great Britain in which if anyone opposed the king, he or she will be punished for treason therefore forcing everyone to comply or be punished. The irony in it all is, is this or is this not the very thing they we wanted freedom from? Did we or did we not fight for liberation of this unjust mindset? I guess it is clear to say history has a way of repeating itself.
Thursday, November 14, 2019
Nature vs Nurture Essay -- Arguementative Essays
Nature vs Nurture Most of us have an intuition that, although our genes provide advantages and constraints, we retain great control over our lives. However, we are developing a second, competing intuition that, like it or not, our genes determine our abilities, our preferences, and our emotions. We would like to think we are much more than the sum of our genes, but scientists have apparently demonstrated that our genes determine some of our most complex behavioral and cognitive characteristics. The focus on genes as the primary mode of biological explanation has been especially clear in the marketing of the Human Genome Project. In support of this project, Robert L. Sinsheimer, biologist and former chancellor at the University of California, Santa Cruz, affirmed, "[i]n the deepest sense we are who we are because of our genes." (Berkowitz 1996) Does the available scientific evidence actually tell us that our genes determine our behavioural, emotional, and cognitive characteristics? Do single genes specify particular behavioural traits? To answer these questions, most non-scientists depend upon the cursory reports of new research findings that appear regularly in the lay press. These reports are oversimplified and may be shaped by the desire of both journalists and scientists to create an exciting story. As a result, our perceptions of the scientific evidence may be skewed by a few dramatic findings, some of which may be wrong. Nowhere has this been more clear than in the representation of the roles of genes in determining uniquely human characteristics, involving our thoughts, emotions, and behaviours. Within the past decade, there have been highly visible reports localizing genes for manic-depression (Baron et al. 19... ...Sussex, K.K. Kidd, C.R. Allen, A.M. Hostetter, and D.E. Housma. 1987. Bipolar Affective Disorder Linked to DNA Markers on Chromosome 11. Nature 325: 783-787 Gelernter, J., S. O'Malley, N. Risch, H.R. Kranzler, J. Krystal, K. Merikangas, J.L. Kennedy, and K.K. Kidd. 1991. No Association Between an Allele at the D2 Dopamine Receptor Gene (DRD2) and Alcoholism. JAMA 266: 1801- 807 Hamer, D.H., S. Hu, V.L. Magnuson, N. Hu, and A.M.L. Pattatucci. 1993. A Linkage between DNA Markers on the X-Chromosomes and Male Sexual Orientation. Science 261: 321-327 Kelsoe, J.R., E.I. Ginns, J.A. Egeland, D.S. Gerhard, A.M. Goldstein, S.J. Bale, D.L. Pauls, R.T. Long, K.K.Kidd, G. Conte, D.E. Housman and S.M. Paul. 1989. Re-evaluation of the Linkage Relationship Between Chromosome 11p Loci and the Gene for Bipolar Affective Disorder in the Old order Amish. Nature 342: 238-243. Nature vs Nurture Essay -- Arguementative Essays Nature vs Nurture Most of us have an intuition that, although our genes provide advantages and constraints, we retain great control over our lives. However, we are developing a second, competing intuition that, like it or not, our genes determine our abilities, our preferences, and our emotions. We would like to think we are much more than the sum of our genes, but scientists have apparently demonstrated that our genes determine some of our most complex behavioral and cognitive characteristics. The focus on genes as the primary mode of biological explanation has been especially clear in the marketing of the Human Genome Project. In support of this project, Robert L. Sinsheimer, biologist and former chancellor at the University of California, Santa Cruz, affirmed, "[i]n the deepest sense we are who we are because of our genes." (Berkowitz 1996) Does the available scientific evidence actually tell us that our genes determine our behavioural, emotional, and cognitive characteristics? Do single genes specify particular behavioural traits? To answer these questions, most non-scientists depend upon the cursory reports of new research findings that appear regularly in the lay press. These reports are oversimplified and may be shaped by the desire of both journalists and scientists to create an exciting story. As a result, our perceptions of the scientific evidence may be skewed by a few dramatic findings, some of which may be wrong. Nowhere has this been more clear than in the representation of the roles of genes in determining uniquely human characteristics, involving our thoughts, emotions, and behaviours. Within the past decade, there have been highly visible reports localizing genes for manic-depression (Baron et al. 19... ...Sussex, K.K. Kidd, C.R. Allen, A.M. Hostetter, and D.E. Housma. 1987. Bipolar Affective Disorder Linked to DNA Markers on Chromosome 11. Nature 325: 783-787 Gelernter, J., S. O'Malley, N. Risch, H.R. Kranzler, J. Krystal, K. Merikangas, J.L. Kennedy, and K.K. Kidd. 1991. No Association Between an Allele at the D2 Dopamine Receptor Gene (DRD2) and Alcoholism. JAMA 266: 1801- 807 Hamer, D.H., S. Hu, V.L. Magnuson, N. Hu, and A.M.L. Pattatucci. 1993. A Linkage between DNA Markers on the X-Chromosomes and Male Sexual Orientation. Science 261: 321-327 Kelsoe, J.R., E.I. Ginns, J.A. Egeland, D.S. Gerhard, A.M. Goldstein, S.J. Bale, D.L. Pauls, R.T. Long, K.K.Kidd, G. Conte, D.E. Housman and S.M. Paul. 1989. Re-evaluation of the Linkage Relationship Between Chromosome 11p Loci and the Gene for Bipolar Affective Disorder in the Old order Amish. Nature 342: 238-243.
Tuesday, November 12, 2019
Preparation and analysis of inorganic and organic compounds Essay
Task 1 titration of sodium hydroxide with hydrochloric acid In this experiment the sodium hydroxide is neutralized with Hydrochloric acid to produce sodium chloride (the soluble salt) it is then crystallized in a dish. The equation for the above reaction is ââ âNaOH(aq) + HCl(aq) ââ â NaCl(aq) + H20(l) Method Add 25cm3 of sodium hydroxide into a conical flask then add couple of drops of methyl orange indicator Next fill the burette with HCL using a funnel to the 0 mark Add HCL to sodium hydroxide in small amounts swirling constantly keep adding until the solution changes to a red colour record your result Using the same volume of HCL now add it to another 25 cm3 of sodium hydroxide to produce a neutral solution Use a Bunsen burner and an evaporating dish to reduce the volume to half Finally leave to evaporate in a crystallizing dish to produce a white crystalline solid Average Volume = 26.35 Mass of Evaporating dish = 53.86 (Mass = 55.04 ââ¬â 53.86 = 1.18g) Mass = n x Mr = 0.025 x 58.5 = 1.4625 Calculating Percentage Yield 1.18 x 100 = 80.7 % 1.4625 Test for ions present Sodium Na+ ââ¬â test carried out = flame test ââ¬â result golden yellow This happens as the electrons move to higher energy level and then fall back down when heated which gives out yellow light. Chloride test ââ â test carried out = add silver nitrate ââ¬â result white precipitate of silver chloride was formed Task (e) Purity analysis of NaCl In this task I will be showing the purity analysis of NaCl the same procedure will be carried out as before but this time 0.1 moldm-3 of sodium chloride is titrated with 0.05 moldm-3 silver nitrate the indicator will be the chromate indicator The chemical formula for the following reaction is:NaCl(aq) + AgNO3(aq) ââ â AgCl(s) + NaNo3(aq) RESULTS These are the results obtained for the following experiment: Rough 1 2 Final burette reading 19.9 20.5 20.6 Initial Burette Reading 0.00 0.00 0.00 Titre 19.9 20.5 20.6 Average Volume = 20.55 Converted to dm3 /1000 1)calculate no of moles of silver nitrate N= C x V =0.05 x 0.02055 = 0.010275 moles 2)answer = no of mole of NaCl (1 : 1 ratio) 3) Calculate the actual concentration of NaCl C= n/V = 0.010275 = 0.10275moldm-3 0.01 4)percentage purity ppurity = 0.1 x 100 = 97.3%) 0.010275 Task 2 Method: 1)shake 2g of 2- hydroxybenzoic acid with 4 cm3 of ethanoic anhydride in a 100cm3 conical flask 2) add five drops of concentrated sulphuric acid agitating the flask for about 10 mins the whole wil form a crystalline mush 3) Dilute by stirring it in 4cm3 of cold glacial ethanoic acid and cool by placing in a water bath containing crushed ice 4) filter off the crystals using a Hirsch funnel and wash once with ice cold water 5) place the crude aspirin in a 100cm3 beaker add hot water not boiling water till it dissolves 6)cool and filter of crystals this process is known as recrystallisation 7) Take 4 test tubes add 2cm3 of distilled water in each and in 1 tube add one crystal of the product before recrystallisation and shake 8) Second tube add one crystal of the recrystallised product and shake 9) Third tube add one crystal of 2-hydroxybenzoic acid and shake 10) In last tube add one crystal of known pure aspirin and shake 11)To each tube add 2 drops in turn of neutral iron (III) chloride and shake Following this method I got the following results Mass at start was 2.04 Finishing mass was 2.08 Amount of yield: 138 ââ â180 1 ââ â180/138 1 ââ â1.3 2.04 ââ â 2.652 2.08 x 100 = 78.4% 2.652 Organic testing To test for a phenol group Method: Add neutral iron III chloride(if a phenol group is present it will change into purple complex and if theres no purple then the aspirin is pure) Using the following method my result showed a purple complex showing that my aspirin was impure Melting point analysis
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