The molecular formula of an ester is C(3...

The molecular formula of an ester is `C_(3)H_(7)COOC_(2)H_(5)`. Write the molecular formula of the alcohol and the acid from which it might be prepared.

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The left side part of the formula of ana ester (containing the CO part ) is derived from the acid and the right side part of and easter is derived from the alcohol .So in the ester `C_(3)H_(7)COOC_(2)H_(5)`, the acid will be `C_(3)H_(7)COOH` and the alcohol will be `HOC_(2)H_(5)` which is written more conveniently as `C_(2)H_(5)OH` Thus
(i) The acid present in the ester `C_(3)H_(7)COOC_(2)H_(5) "is" C_(3)H_(7)COOH` which is butanoic acid .
(ii) The reaction of butanoic aid and ethanol to from this ester can be represented as:

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