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Question

Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

CH3CH2CCH>[R]CH _{3} CH _{2} C \equiv CH {->[{ R }]} butanone 2.R-2 . R is

A

Hg++/dilH2SO4Hg ^{++} / dil \cdot H _{2} SO _{4}

B

KMnO4KMnO_{4}

C

KClO3 KClO_{3}

D

K2Cr2O7K _{2} Cr _{2} O _{7}

Answer

Hg++/dilH2SO4Hg ^{++} / dil \cdot H _{2} SO _{4}

Explanation

Solution

Alkyne change to ketone upon hydrolysis in presence of mercury salt.
CH3CH2CCH>[H.OH][Hg2+/H2SO4]CH3CH2COCH3 butanone-2 CH _{3} CH _{2} C \equiv CH {->[{ H.OH }][{ Hg ^{2+} / H _{2} SO _{4}}]}\underset{\text { butanone-2 }}{ CH _{3} CH _{2} COCH _{3}}