Answer to Question #165303 in Organic Chemistry for wilderpro

Question

The following is a description of an experiment in which ethyl benzoate is hydrolyzed. 5cm (0.03 moles) of ethyl benzoate   are mixed with 30cm³  of 2M NaOH solution and heated under reflux for about 15minutes until all the oily drops have disappeared.  The flask is then filled for fractional distillation and the mixture distilled until the boiling point reaches 75⁰ to give a distillate "A".     

 The content of the flask is allowed to cool and then slowly acidified with concentrated hydrochloric acid when a precipitate "B" separates. This precipitate is purified by recrystallization from water.

a. Describe how you would separate and recrystallize the precipitate B. Indicate the apparatus

b. State how you would check that your recrystallized speciment is pure.

Answer 1

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