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Question

Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

Identify ZZ in the following sequence CH3CH2IKCNXH3O+/H2OYΔH3O+/H2OZCH _{3} CH _{2} I \xrightarrow{ KCN } X \xrightarrow{ H _{3} O ^{+} / H _{2} O } Y \xrightarrow[\Delta]{H_3O^+/H_2O}Z

A

CH3COClCH_{3}COCl

B

CH3CONH2 CH_{3}CONH_{2}

C

CH3COOHCH_{3}COOH

D

CH3CH2COOH CH_{3}CH_{2}COOH

Answer

CH3CH2COOH CH_{3}CH_{2}COOH

Explanation

Solution

CH3CH2IKIKCNCH3CH2CNH3O+/H2OCH3CH2CHOH3O+/H2OCH3CH2COOHpropanoic acidCH _{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}