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Chemistry

Give reasons for the following :

Concentrated sulphuric acid may be added during esterification of acetic acid.

Organic Chemistry

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Answer

Reversible reaction may be prevented by using conc. H2SO4 when the reaction is about to complete by removing H2O.

C2H5OHethyl alcohol+CH3COOHacetic acidConc. H2SO4CH3COOC2H5ethyl ethanoate+H2O\underset{\text{ethyl alcohol}}{\text{C}2\text{H}5\text{OH}} + \underset{\text{acetic acid}}{\text{CH}3\text{COOH}} \xrightarrow{\text{Conc. H}2\text{SO}4} \underset{\text{ethyl ethanoate}}{\text{CH}3-\text{COO}-\text{C}2\text{H}5} + \text{H}_2\text{O}

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