A) \[\text{B}{{\text{r}}_{\text{2}}}\]
B) \[HBr\]
C) \[HCl\]
D) \[HCN\]
Correct Answer: D
Solution :
Wackcr process: This process is used in the preparation of acetaldehyde from ethylene. This process involves the treatment of ethylene with an acidified aqueous solution of palladium chloride and cupric chloride as: \[\underset{C{{H}_{2}}}{\overset{C{{H}_{2}}}{\mathop{||}}}\,+PdC{{l}_{2}}+{{H}_{2}}O\xrightarrow{CuC{{l}_{2}}/{{H}^{+}}}\] \[\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,X \\ (Acetaldehyde) \end{smallmatrix}}{\mathop{C{{H}_{3}}CHO}}\,\,+Pd+2HCl\] So, the compound X is acetaldehyde. The compound X reacts readily with HCN and undergoes addition reaction to give acetaldehyde cyanohydrin as:You need to login to perform this action.
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