Your complete report for this experiment should include the data page, answers to the following questions, and a conclusion (1 page maximum. The products of the Methanol conc. Esters are derivatives of carboxylic acids in which the call carbon bears an alkyl substitutes (-OR) instead of the hydroxyl substitutes (-OH) of the acid. Carefully add the distillate to 50 mL of saturated aqueous sodium carbonate (Na 2CO 3) in a 250-mL beaker. SO. As a result of the Fischer esterification process, 0.344 g of methyl benzoate was recovered for the final product. [acetic acid] x [ethanol] K eq = = 3.38 As in any equilibrium processes, the reaction may be driven in one direction by adjusting the concentration of one of the either the reactants or products (Le Châtelier’s principle). The calculation for the yield obtained by the synthesis is provided below (3): 0.344g % Yield = % Yield = DISCUSSION. 2 MgBr + CO 2 O (MgBr) O OH O benzoic acid (2) H+ The carbon-containing portion of Grignard reagent, 1, has two characteristics: (1) as a carbanion that serves as a nucleophile for its reaction with carbon dioxide, and (2) as a strong base that reacts with acidic hydrogen atoms. Ethylamine Acetyl chloride . Salicylic is a weak acid with an alcohol functional group attached to it. Procedure :-A) Fischer Esterification 's Procedure ( Direct esterification of a carboxylic acid with an alcohol ):-1- Choose any pair of these caboxylic acids and alcohols . Esterification, the alcohol in the carboxylic acid takes a proton from the benzoic acid to form a water molecule. Acetamide 10% H. 2. H. 2. The Synthesis of Methyl Benzoate by Fischer Esterification Erica Brown Organic Chemistry Lab 305 March 9, 2017 Abstract Benzoic acid was converted to methyl benzoate via an acid catalyzed reaction with methanol. These characteristics are an esterification reaction between salicylic acid and acetic anhydride. The distillate contains the n-butyl acetate plus the impurities; n-butyl alcohol, acetic acid, sulfurous acid (from reduction of some of the sulfuric acid--a side reaction), and water. 4 . Benzoic acid 10% NaOH Sodium acetate Red/Blue litmus papers pH papers . The resource is set out as teachers' notes followed by the students' page which presents the task to be investigated. derivatives of carboxylic acids lab report; derivatives of carboxylic acids lab report. I. Esterification (see Ege’s: Sections 15.6 B – D, pp 622 – … After added with the concentrated sulphuric acid, another portion of methanol is introduced into the mixture. The esterification between benzoic acid and methanol is favourable in acidic condition; as a result more ester can be formed in this experiment. Melting point tubes should be placed in the glass waste container. Laboratory Report on Stratification Ramshackle Ramona Mae S. Restaurant BBS Chem..-2 Abstract: This report presents the process of producing an ester, specifically isopleths acetate. When using excess alcohol, a molar ratio 4:1 is used in the procedure. This type of interaction involves a reaction of a carboxylic acid with an alcohol in order to form a carboxylate ester2,3. Post-Lab Question #1: The procedure for the Fischer esterification of benzoic acid (C6H5COOH) with ethanol does not need to include the step in which the solution is basified to pH of ~8 with Na2CO3 – after refluxing, the alcoholic solution is essentially dumped into water and can be extracted at this point. Purpose – Study the Carboxylic acids and their derivatives with one or more carbonyl groups. 7. Posted: November 6, 2020 ; By: Category: Uncategorized (iii) diborane reduction. The synthesizing of methyl benzoate from benzoic acid and methanol was a successful endeavor. Ester Esterification Lab Report. In this microscale chemistry experiment, from the Royal Society of Chemistry, benzoic acid is warmed with ethanol in a plastic pipette, the ester ethylbenzoate, is identified by smell. Salicylic acid. 4. The benzoic acid then removes the proton on the alcohol group in methanol. SO. 718 Words 3 Pages. Waste disposal: Please discard your purified benzoic acid into the container in the hood labeled: Benzoic Acid - Student Prep.