x 100% = 71.72 % 72 % melting point of methyl m-nitrobenzene: 78-82oC Discussion: Methyl m-nitrobenzoate is formed in this reaction rather that ortho or para isomers because of the ester group of the starting product of methylbenzoate. All strongly electron-withdrawing groups give predominantly the meta-isomer as product while the weakly deactivating halogens give predominantly give ortho- and para- isomers as products. The functional group of ester is an electron withdrawing
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chemistry lab report : reaction of alcohol CHEMISTRY LAB REPORT SK026 SEMESTER 2 SESSION 2011/2012 TITLE :REACTION OF ALCOHOL DATE : NAME : MATRIC NO : PARTNER : PRACTICUM : SUPERVISOR : Title : Reaction Of Alcohol Objectives : 1. To classify alcohol 2. To study the chemical properties of alcohols Introduction: Alcohol is a class of organic compound containing hydroxyl group‚ OH as the
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To increase the percentage yield of ethyl ethanoate can be achieved by removing water or ester during esterification. Esterification is reversible reaction. For all reversible reactions‚ they have equilibrium constant‚ denoted by Kc. It should be the same if the reaction performed under same condition. In order to keep the Kc constant‚ the reaction will shift right
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compound which contains acidic properties. An ester is an example of being a derivative of these organic acids. Esters can be prepared by the reaction of carboxylic acids and alcohols‚ with an inorganic acid used as a catalyst which is dubbed esterification. With o-hydrobenzoic acid‚ or salicylic acid‚ we are able to create acetylsalicylic acid otherwise known as aspirin as well as methyl salicylate‚ which is a component of oil of wintergreen. Both of which are used for pain relief/soreness. Salicylic
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Preparation of an Acetic Acid Ester Abstract: 14.1 g of octyl acetate were synthesized from the esterification process using 20.0 ml of acetic acid and 17.9 g of n-octanol. The theoretical yield was 23.8 g of octyl acetate. The percent yield was 59.2%. The purification of the final ester was confirmed by boiling point (186-199°C) and infrared index (nD=1.419). It was a colorless liquid that had a slight fragrance of orange and indescribable chemicals. The Infrared spectra confirmed ester
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Chapter I PRODUCT SPECIFICATION I. Introduction Mango (Magnifera indicia) is a major tropical fruit that is widely consumed in the society. It is considered the dominant tropical fruit variety in the world (Sarris 2003) with total production worldwide of about 25 million metric tonnes a year. It is a succulent‚ delicious fruit with a high nutritional content that is commonly consumed when ripe. Mango is a seasonal fruit that is native to Southeast Asia. As a result of its sweet taste and the large
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September 30‚ 2012 Experiment 5‚ Preparation of Synthetic Banana Oil Introduction: This experiment prepares synthetic banana oil (isopentyl acetate) through the Fisher esterification method by combining isopentyl alcohol with acetic and sulfuric acid then heating the mixture under reflux for an hour. Esterification is a chemical reaction in which two reactants (an alcohol and an acid) form an ester as the reaction product. Observations and Data: When the sulfuric acid was combined
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AIMS At the end of the experiment‚ students should be able to synthesise pure aspirin using chemical tests such as esterification and recrystallization independently and to also find out the melting point range of aspirin using melting point determination. INTRODUCTION Aspirin‚ which is also known as acetylsalicylic acid‚ is one of the commonly used and widely found in any drugstore or pharmacy. Its properties make aspirin a well-rounded drug that reduces inflammation and fever and also relieves
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your starting material electron donating or withdrawing? Support your conclusion with resonance drawings. The ester group‚ CO2CH3‚ of the starting material was electron withdrawing. 2. Draw the mechanism of the nitronium ion reaction with the methylbenzoate. 3. Why does water stop the reaction? Water stops the reaction because of Le Châtlier’s principle. Since water is a product‚ when more is added it drives the reaction to the reactant side. More nitric acid is produced‚ which is not a strong enough
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Intro In 1936 a scientist named Ruzika was the first ever to make a pure form of testosterone from cholesterol (steroid.com). It is then that steroids emerged as a performance enhancing drug. I am pretty sure we all have pre conceived ideas and notions about steroids and the people that use them. Today I would like to talk to you all about the fact and fiction of steroid usage. 1st I would like to talk about the History of steroids‚ 2nd the types of steroids‚ 3rd anabolic and androgenic affects
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