Organic Chemistry Laboratory ABSTRACT In this experiment‚ acetanilide was used as the pure organic compound. Acetylation of aniline and acetic anhydride yields the crude product or crude acetanilide. The crude acetanilide was purified by dissolving it in hot water and then the solution was cooled slowly by placing in an ice bath. The yielded crystals were pure acetanilide since molecules of other compounds present in the crude acetanilide were excluded from the growing crystal lattice. Lattice is
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RECRYSTALLIZATION OF ACETANILIDE De Ocampo‚ Yves Aaron Julian Q.‚ Dela Vega‚ Roderick B. Jr.‚ Elguira‚ Cedric Tristan D. Enriquez‚ Joanne B.‚ Gabat‚ John Elliot N. Group 5 2D-Medical Technology Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving
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substitution at the 4-position over the 2-positions which it shields. Aniline is the simplest aromatic amine and is synthesised by first nitrating benzene using a concentrated mixture of nitric acid and sulphuric acid to give nitrobenzene which is then hydrogenated in the presence of a nickel catalyst to give the final product. Aniline undergoes very readily electrophilic substitution reactions as the aromatic ring of aniline is very electron
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EXP-10 CHEM 233L SYNTHESIS OF p-BROMOANILINE Introduction: In this experiment‚ p-bromoaniline was synthesized in three steps starting from aniline. Since the amino group of aniline is a strong activator of aromatic ring‚ direct bromination is impractical (equation 1). In order to make a desired product‚ amino group needed to be protected as the acetamide which also maintained ortho and para position but slowed down the rate of reaction (equation 2). Slow reaction rate would increase
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Question: Evaluate the relative importance of the following as factors prompting Americans to rebel in 1776: *parliamentary taxation *British military measures *restrictions of civil liberties *the legacy of colonial religious and political ideas. Introduction: a. Time Frame/organization of the paper: As a result of the Seven Years’ War‚ Britain was buried in debt caused by instigating war to safeguard the colonies. Manipulating the colonies into taxation in order to pay debt resulted in resentment
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‘The Son’s Veto’ and ‘The Melancholy Hussar of the German Legion’ by Thomas Hardy Both Hardy’s short stories‚ ‘The Son’s Veto’ and ‘The Melancholy Hussar’ follow the tales of Sophy and Phyllis‚ two young women succumbing to the social conformities of their time and their seemingly predetermined fates. Throughout the 19th Century‚ a rigid class structure - defined by one’s possessions‚ upbringing‚ wealth‚ parentage and education - totally dominated society. With regard to Sophy and Phyllis in ‘The
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various ways. Write an essay in which you outline this concept as well as distinguish between absolute and relative poverty. In your discussion provide relevant examples to illustrate your understanding. Discuss any three causes of poverty in Third World countries using concrete examples. Table of contents 1. Introduction 2. Definition of poverty 3. Definition of Absolute and Relative Poverty 4. Robert Chambers’ deprivation trap 5. Factors that Causes poverty in Third World countries 6. Conclusion
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experiment was to illustrate electrophilic aromatic substitution by synthesizing p-nitroanilide (as well as ortho) from acetanilide by nitration. The para form was separated from the ortho form based on solubility properties using recrystallization techniques. Synthetic equations: Physical Properties & Hazards of Reagents/Products: (all taken from Sigma-Aldrich website) Acetanilide MM = 135.16 g/mol Melting point = 113-115°C Hazards: acute toxicity Sulfuric acid MM = 98.08 g/mol Boiling
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In the first part of this experiment acetic anhydride was used to prepare acetanilide which could then be readily brominated to form a mono-brominated product‚ with the bromine positioned at either the ortho‚ meta or para position on the aromatic ring. Acetic anhydride is very reactive towards nucleophiles and this reactivity is the result of the difference in electronegativities of the carbon and oxygen atoms that are bonded in acetic anhydride. This difference in electronegativities causes one
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Discuss disparities related to ethnic and cultural groups relative to low birth weight infants and preterm births. Describe the impact of extremely low birth weight babies on family and society (short and long term‚ including economic considerations‚ ongoing care considerations‚ and comorbidities associated with prematurity). Discuss whether you feel that support services and systems in your community for preterm infants and their families adequately address their needs or not. Explain your answer
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