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 CH3MgBr (excess) in (C2H5)2O followed by addition of H2O gives Q. The compound Q on treatment with H2SO4 at 0C gives R. The reaction of R with CH3COCl in the presence of anhydrous AlCl3 in CH2Cl2 followed by treatment with H2O produces compound S. [Et in compound P is ethyl group]

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Answer:

Correct Answer: 20.

gas

Solution:

  1. Compounds with CH3CO or CH3CH(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 αH, therefore, statement I is true but statement II is false.

Passage-1



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