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MCAT Question A Day - 4/13/13 - Answer!

The carbonyl group increases the acidity of the hydrogen atoms attached to the alpha carbon. The best explanation is which of the following?

A.  The oxygen in the carbonyl group can accommodate a negative charge.
B.  The carbonyl group is flat.
C.  The carbonyl carbon has sphybridization.
D.  The carbonyl group has a pi bond.

The correct answer is (A). The negative charge of the resulting carbanion is stabilized by the carbonyl oxygen.