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प्रश्न
Give plausible explanation for the following:
During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, the water or the ester should be removed as soon as it is formed.
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उत्तर
Ester, along with water, is formed reversibly from a carboxylic acid and an alcohol in the presence of an acid.
\[\ce{\underset{Carboxylic acid}{RCOOH} + \underset{Alcohol}{R'OH} <=>[H2SO4] \underset{Ester}{RCOOR'} + H2O}\]
If either water or ester is not removed as soon as it is formed, it reacts to give back the reactants, as the reaction is reversible. Therefore, either of the two should be removed to shift the equilibrium in the forward direction, i.e., to produce more ester.
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संबंधित प्रश्न
Explain the mechanism of esterification
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Fischer esterificatione
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Salicylic acid is treated with acetic anhydride in the presence of conc H2SO4
Given below are two statements:
Statement I: The esterification of carboxylic acid with an alcohol is a nucleophilic acyl substitution.
Statement II: Electron withdrawing groups in the carboxylic acid will increase the rate of esterification reactions.
Choose the most appropriate options.
In the given reaction,
The number of n electrons present in the product 'P' is ______.
A reaction of ethyl amine and acetic anhydride leads to the formation of ______.
