Aldehydes Ketones Question 196
Question: Cyanohydrin of which of the following forms lactic acid
[MHCET 2003]
Options:
A) $ CH_3CH_2CHO $
B) $ CH_3CHO $
C) $ HCHO $
D) $ CH_3COCH_3 $
Show Answer
Answer:
Correct Answer: B
Solution:
We know that $ \underset{Acetaldehyde}{\mathop{\overset{\overset{H}{\mathop{|}}}{\mathop{CH_3-C=O}}}}\xrightarrow{+HCN}\underset{Cyanohydrin}{\mathop{\underset{\underset{CN}{\mathop{|}}}{\mathop{\overset{\overset{H}{\mathop{|}}}{\mathop{CH_3-C-OH}}}}}}\xrightarrow{+H_2O} $
$ \underset{\text{Lactic acid}}{\mathop{\underset{\underset{COOH}{\mathop{|}}}{\mathop{\overset{\overset{H}{\mathop{|}}}{\mathop{CH_3-C-OH}}}}}} $ Thus Lactic acid is formed.
BETA
