Question:
In the reaction sequence,
\(\mathrm{C_2H_5Cl + KCN \xrightarrow{C_2H_5OH} X \xrightarrow{H_3O^+} Y}\),
what is the molecular formula of Y?
In the reaction sequence,
\(\mathrm{C_2H_5Cl + KCN \xrightarrow{C_2H_5OH} X \xrightarrow{H_3O^+} Y}\),
what is the molecular formula of Y?
\(\mathrm{C_2H_5Cl + KCN \xrightarrow{C_2H_5OH} X \xrightarrow{H_3O^+} Y}\),
what is the molecular formula of Y?
Show Hint
Nitrile hydrolysis: RCN \(\xrightarrow{H_3O^+}\) RCOOH + NH\(_4^+\).
Updated On: Apr 20, 2026
- \(\mathrm{C_3H_6O_2}\)
- \(\mathrm{C_3H_5N}\)
- \(\mathrm{C_2H_4O_2}\)
- \(\mathrm{C_2H_6O}\)
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
KCN reacts with alkyl halide via S\(_N\)2 to give nitrile. Hydrolysis of nitrile gives carboxylic acid.
Step 2: Detailed Explanation:
C\(_2\)H\(_5\)Cl + KCN → C\(_2\)H\(_5\)CN (ethyl cyanide, X) + KCl.
C\(_2\)H\(_5\)CN \(\xrightarrow{H_3O^+}\) C\(_2\)H\(_5\)COOH (propanoic acid, Y).
Molecular formula of Y = C\(_3\)H\(_6\)O\(_2\).
Step 3: Final Answer:
C\(_3\)H\(_6\)O\(_2\)
KCN reacts with alkyl halide via S\(_N\)2 to give nitrile. Hydrolysis of nitrile gives carboxylic acid.
Step 2: Detailed Explanation:
C\(_2\)H\(_5\)Cl + KCN → C\(_2\)H\(_5\)CN (ethyl cyanide, X) + KCl.
C\(_2\)H\(_5\)CN \(\xrightarrow{H_3O^+}\) C\(_2\)H\(_5\)COOH (propanoic acid, Y).
Molecular formula of Y = C\(_3\)H\(_6\)O\(_2\).
Step 3: Final Answer:
C\(_3\)H\(_6\)O\(_2\)
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