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Q. Identify $Z$ in the following sequence $CH _{3} CH _{2} I \xrightarrow{ KCN } X \xrightarrow{ H _{3} O ^{+} / H _{2} O } Y \xrightarrow[\Delta]{H_3O^+/H_2O}Z$

J & K CETJ & K CET 2013Aldehydes Ketones and Carboxylic Acids

Solution:

$CH _{3} CH _{2} I \xrightarrow [-KI]{KCN } CH_3CH_2CN \xrightarrow{ H _{3} O ^{+} / H _{2} O } CH_3CH_2CHO \xrightarrow{H_3O^+/H_2O} \underset{\text{propanoic acid}}{CH_3CH_2COOH}$