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An organic compound is boiled with alcoholic potash. The product is cooled and acidified with HCl. A white solid separates out. The starting compound may be
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ethyl benzoate
Ethyl benzoate is boiled with alc. potash to give ethyl alcohol and potassium benzoate.
Potassium benzoate is converted into benzoic acid, a white solid which separates out.
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOK}+\mathrm{HCl} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH}+\mathrm{KCl}$
Potassium benzoate is converted into benzoic acid, a white solid which separates out.
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOK}+\mathrm{HCl} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH}+\mathrm{KCl}$
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