MCQ
The compound which forms acetaldehyde when heated with dilute NaOH is:
- A1, 2 dichloroethane
- B1, 1, 1 trichloroethane
- C1 chloroethane
- ✓1, 1 dichloroethane
✓
Answer
Correct option: D.
1, 1 dichloroethane
(d) 1, 1 dichloroethane
Explanation: $CH _3 CHCl _2+ OH ^{-} \rightarrow CH _3 CH ( OH )_2 \rightarrow CH _3 CHO + H _2 O$
Gem diols like $\left( CH _3 CH ( OH )_2\right.$ ) are generally not stable. The $2- OH$ group attached to the same C removes $H _2 O$ and forms carbonyl compounds.
Explanation: $CH _3 CHCl _2+ OH ^{-} \rightarrow CH _3 CH ( OH )_2 \rightarrow CH _3 CHO + H _2 O$
Gem diols like $\left( CH _3 CH ( OH )_2\right.$ ) are generally not stable. The $2- OH$ group attached to the same C removes $H _2 O$ and forms carbonyl compounds.
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