Question:


Consider the above chemical reaction and identify product "A"

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Partial hydrolysis of a nitrile with H2O/H+ stops at the amide; further hydrolysis with heat gives the carboxylic acid.
Updated On: Nov 4, 2026
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The Correct Option is C

Solution and Explanation

The reaction is cyclohexanecarbonitrile \(\xrightarrow{\mathrm{H_2O/H^+}}\) A \(\xrightarrow{\mathrm{H_2O/H^+,\ \Delta}}\) cyclohexanecarboxylic acid.
Acid hydrolysis of a nitrile occurs in two stages: \(\mathrm{R{-}C{\equiv}N} \to \mathrm{R{-}CONH_2} \to \mathrm{R{-}COOH}\).
The first stage (H2O, H+, mild) gives the amide, so A = cyclohexanecarboxamide, \(\mathrm{C_6H_{11}CONH_2}\), which on heating with H2O/H+ gives the acid shown. This is option (3).
Answer: (3) cyclohexanecarboxamide, C6H11-CONH2
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