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Chemistry Question on Chemical Reactions

In the given compound which of the following hydrogens is most acidic? CH3(a)−CH2(b)−CO∣∣−CH3(c)\underset{(a)}{CH_3} -\underset{(b)}{CH_2} -\overset{\underset{||}{O}}{C} -\underset{(c)}{CH_3}

A

Only [a]

B

Only [b]

C

Only [c]

D

Both [b] and [c]

Answer

Only [b]

Explanation

Solution

CH3a−CH2b−CO∣∣−CH3c\underset{a}{CH_3} -\underset{b}{CH_2} -\overset{\underset{||}{O}}{C} -\underset{c}{CH_3} This compound undergoes embolization by the following mechanism
\ce−>[H2O][−H+]CH3−CH=COH∣−CH3\ce{->[{H_2O}][{-H^+}]}CH_3 -CH = \overset{\underset{|}{OH}}{C}-CH_3 Thus, hydrogen [b] is most acidic as it is attached with the active methylene group.