Starting with the weight of .198 g of salicylic acid‚ the moles of the reactant was determined to be 1.43 x 10-3‚ as shown in Equation 3. The purified aspirin product was a white powder that had a weight of .140 g. The number of moles of the purified aspirin product after extraction was 7.77 x 10-4 as shown in Equation 4. These two moles calculated a chemical yield of 54.3% as shown in Equation 5. The melting point of the pure aspirin product was ranged at 117.8-125.2C as shown in Table 1.
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evaporates from a warm surface and condenses as a solid on a cold surface. The crude naphthalene had a melting point range of 85°-90° C while the 35.4% yield of pure naphthalene had a melting point range of 70°-76° C. Recrystallization was used to purify the salicylic acid. Recrystallization is the process of dissolving the original solid in a hot solvent and then allowing the solution to cool to let the solid crystallize again. The crude salicylic acid had a melting point range of 150°-153° C while
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Paracetamol - a curriculum resource Frank Ellis RSeC ROYAL SOCIETY OF CHEMISTRY Paracetamol - a curriculum resource Compiled by Frank E llis Edited by Colin Osborne and Maria Pack Designed by lmogen Bertin Published by the Royal Society of Chemistry Printed by the Royal Society of Chemistry Copyright 0 Royal Society of Chemistry 2002 Registered charity No. 207890 Apart from any fair dealing for the purposes of research or private study‚ or criticism or review‚ as permitted under
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Panacetin‚ a type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation‚ and filtration‚ the three components will be isolated based on their solubilities and acid-base properties. Then‚ the percent composition of Panacetin can be deduced based on the masses
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Experiment 1: separating components of a counterfeit pharmaceutical Aim Counterfeit pharmaceuticals are a big concern regarding the issue of medicines due to fake versions containing either the wrong ingredients or inaccuracy of the active ingredient which can cause toxicity issues in patients using these products. The aim of this experiment
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Nor Amirah Farhana Nawawi Organic Chemistry Lab Report Bo Shen Title: Nucleophillic Substitution Reaction Introduction: This lab experimented on the reactions of the chemicals that undergoes SN1 or SN2 reaction. Nine different compounds were given to be examined with two reagents - NaI in acetone and AgNO3 in ethanol. The SN1 reaction happens in AgNO3 in ethanol reagents‚ and SN2 reaction is in NaI in acetone. Procedure: Following the lab manual. Results: compound NaI /acetone (SN2) AgNO3/ethanol
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Lide‚ David R. “Physical Constanst of Chemical Compounds”. CRC Handbook of Chemistry and Physics 88th Edition (Internet Version 2008. CRC Press/Taylor and Francis. Boca Raton‚ FL. (2008). [4] Milligan‚ G. St.Martin’s University: Separation by Recrystallization. <http://homepages.stmartin.edu/fac_staff/gmilligan/>. (2007). Accessed May 19‚ 2008.
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Abstract In this experiment‚ 4-(4-chlorophenyl)-3‚4-dihydropyrimidine-2-one is synthesized in a solvent-free reaction‚ where urea‚ ethyl acetoacetate‚ 4-chlorobenzaldehyde are used as the reactants and p-toluenesulfonic acid is used as the catalyst. This reaction is similar to the original synthesis of DHPM by Pietro Bignelli‚ as it incorporates a single step. Due to its environmentally friendly conditions‚ such as the use of solar energy as a heat source and the lack of solvent‚ this synthesis of
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VI. Results and Discussion In this exercise‚ the goal was to produce acetylsalicylic acid through the organic synthesis from the reaction of salicylic acid to acetic anhydride‚ the starting materials. Instead of using acetic acid‚ acetic anhydride was used as solvent since the anhydride reacting with water to form acetic acid tends to drive the reaction to the right. It results from the elimination of a molecule of water from two molecules of acetic acid (see Fig. 11.2). Figure 11.3 below
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SUPPLEMENTARY MATERIAL (#2000-0709) SOAP FROM NUTMEG: AN INTEGRATED INTRODUCTORY ORGANIC CHEMISTRY LABORATORY EXPERIMENT Marcio C.S. de Mattos and David E. Nicodem Departamento de Química Orgânica‚ Instituto de Química‚ Universidade Federal do Rio de Janeiro‚ Caixa Postal 68545 21945-970‚ Rio de Janeiro‚ Brazil 1) Written material used by students 2) Instructor notes 3) Chemical abstract registry number of chemicals 1) Written material used by students Soaps
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