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Which of the following is used to shift the esterification reaction of carboxylic acids towards the right?

(a) Using excess of carboxylic acid

(b) Using excess of acid catalyst

(c) Removal of water by distillation

(d) Removal of ester by distillation

I had been asked this question in an interview for job.

My question is from Carboxylic Acids Chemical Reactions topic in section Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

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Right option is (c) Removal of water by distillation

Explanation: Since the esterification of carboxylic acids is a reversible reaction, it can be shifted towards the right by using excess of alcohol or by the removal the water formed by distillation.

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