2:  Nucleophilic attack on carbonyl carbon
Would you expect benzaldehyde to be more reactive or less reactive in
nucleophilic addition reactions than propanal Explain your answer The carbon atom of the carbonyl group of benzaldehyde is less
electrophilic than carbon atom of the carbonyl group present in
propanal The polarity of the carbonyl
group is reduced in benzaldehyde due
to resonance as shown below and
hence it is less reactive than propanal