A) \[C{{H}_{3}}CHO\]
B) \[C{{H}_{3}}COOH\]
C) \[C{{H}_{3}}COC{{H}_{3}}\]
D) \[C{{H}_{3}}C{{H}_{2}}COOH\]
Correct Answer: C
Solution :
In the presence of dil \[{{H}_{2}}S{{O}_{4}}\] and \[H{{g}^{2+}}\]addition of water takes place to the alkyne (according to Markownikoffs rule). \[C{{H}_{3}}\underset{propyne}{\mathop{C\equiv CH}}\,\xrightarrow[+H{{g}^{2+}},\,{{60}^{o}}C]{{{H}_{2}}S{{O}_{4}}}\underset{addition\text{ }product}{\mathop{C{{H}_{3}}-\overset{\begin{smallmatrix} OH \\ | \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}}}\,\] \[\xleftarrow{Tautomerisation}\underset{acetone}{\mathop{C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}}}\,\]
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