Which of the following compounds will react with ethanolic KCN? (a) ethyl chloride (b) acetyl chloride(c) chlorobenzene (d) benzaldehyde
Answers
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(a) ethyl chloride
(b) acetyl chloride
(d) benzaldehyde
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Answer:
(a) ethyl chloride and (d) benzaldehyde are the correct answers.
Explanation:
KCN
KCN is pottasium cyanide.
It is crystalline and colourless.
It is used in industrial activities like electroplating, golf mining etc.
We will check reaction of ethanolic KCN with each of the following given options.
(a) ethyl chloride
When ethyl chloride reacts with KCN it gives CH3CH2CN.
This is done in the presence of methanol.
This is the correct answer.
(b) acetyl chloride
No reaction takes place here.
Thus it is an incorrect answer.
(c) chlorobenzene
Chlorobenzene does not react with KCN.
Hence this option is incorrect.
(d) benzaldehyde
This process is benzoin condensation.
The reaction first gives acyloin.
The reaction is also called as benzoin addition.
Thus this option is also the correct answer.
Hence, (a) ethyl chloride and (d) benzaldehyde are the correct answers.