Question:
What are A and B in the following reactions?
\[
C_3H_4 \xrightarrow[A]{H_2O} X
\]
\[
(CH_3)_2CHOH \xrightarrow[B]{} X
\]
What are A and B in the following reactions?
\[
C_3H_4 \xrightarrow[A]{H_2O} X
\]
\[
(CH_3)_2CHOH \xrightarrow[B]{} X
\]
Show Hint
Terminal alkyne hydration:
\[
RC\equiv CH \rightarrow Ketone
\]
in presence of
\[
Hg^{2+}/H^+
\]
Updated On: Jun 17, 2026
- $H^+,273K;\ Cu/573K$
- $H^+,273K;\ CrO_3$
- $Hg^{2+}/H^+,333K;\ PCl_3$
- $Hg^{2+}/H^+,333K;\ Cu/573K$
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Concept:
\[
C_3H_4
\]
represents propyne.
Hydration of terminal alkynes in the presence of mercuric ions produces ketones.
Step 1: Hydration of propyne.
\[ CH_3C\equiv CH \xrightarrow[333K]{Hg^{2+}/H^+,H_2O} CH_3COCH_3 \] Thus \[ X = \text{Acetone} \]
Step 2: Convert isopropyl alcohol into acetone.
\[ (CH_3)_2CHOH \xrightarrow[573K]{Cu} (CH_3)_2CO \] Thus B is copper at 573 K.
Step 3: Choose the answer.
\[ \boxed{Hg^{2+}/H^+,333K;\ Cu/573K} \]
Step 1: Hydration of propyne.
\[ CH_3C\equiv CH \xrightarrow[333K]{Hg^{2+}/H^+,H_2O} CH_3COCH_3 \] Thus \[ X = \text{Acetone} \]
Step 2: Convert isopropyl alcohol into acetone.
\[ (CH_3)_2CHOH \xrightarrow[573K]{Cu} (CH_3)_2CO \] Thus B is copper at 573 K.
Step 3: Choose the answer.
\[ \boxed{Hg^{2+}/H^+,333K;\ Cu/573K} \]
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