Is this reaction acid or base catalyzed? Why do you need to use 1.0 M HCl at the end of the experiment? (2 points)2. What is the role of the p-nitro group in 4-nitrobenzaldehyde during the ALDOL reaction? What do you think would happen to the yield of the product if the p-methoxy group was present instead of the p-nitro group? (2 points)3. Benzaldehyde (PhCHO) cannot undergo the "ALDOL" reaction by itself in the presence of a strong base (KOH)-Why?