Carboxylic Acids and their Derivatives - Result Question 34
####20. Statement I Acetic acid does not undergo haloform reaction. Statement II Acetic acid has no alpha hydrogen. (1998, 2M)
Passage Based Questions
Passage 1
The reaction of compound $P$ with $CH _3 MgBr$ (excess) in $\left(C _2 H _5\right) _2 O$ followed by addition of $H _2 O$ gives $Q$. The compound $Q$ on treatment with $H _2 SO _4$ at $0^{\circ} C$ gives $R$. The reaction of $R$ with $CH _3 COCl$ in the presence of anhydrous $AlCl _3$ in $CH _2 Cl _2$ followed by treatment with $H _2 O$ produces compound $S$. [Et in compound $P$ is ethyl group]
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Answer:
Correct Answer: 20.
gas
Solution:
- Compounds with $CH _3-\stackrel{O}{C}-$ or $CH _3-CH(OH)$-group gives haloform reaction but this reaction is given only by aldehydes, ketones and alcohols, so acetic acid does not give haloform reaction. However acetic acid has three $\alpha-H$, therefore, statement I is true but statement II is false.
Passage-1
