The attacking of the nucleophile formed in the reactionof acetone and benzaldehyde on most preferntially on the carbonylcarbon of the benzaldehyde but not on the acetaldehyde. This isbecause the electrophilic cheractor of the carbonyl carbon of thebenzaldehyde is increases due to the presence of the electron withdrawing benzene. Hence it readily participate in the reactioncompare with the acetaldehyde. Ethanol is polar solvent. When washes a compound withthis solvent remove the impurities has the polar nature. Solution The attacking of the nucleophile formed in the reactionof acetone and benzaldehyde on most preferntially on the carbonylcarbon of the benzaldehyde but not on the acetaldehyde. This isbecause the electrophilic cheractor of the carbonyl carbon of thebenzaldehyde is increases due to the presence of the electron withdrawing benzene. Hence it readily participate in the reactioncompare with the acetaldehyde. Ethanol is polar solvent. When washes a compound withthis solvent remove the impurities has the polar nature..