in-an-acid-catalyzed-nucleophilic-addition-reaction-what-role-does-protonation-p

Question

In an acid-catalyzed nucleophilic addition reaction, what role does protonation play?

Accepted Answer

It makes the carbonyl carbon more electrophilic by increasing its positive charge.

Answer

It forms a stable intermediate, reducing the reaction rate.

Answer

It removes the oxygen's lone pairs, making the carbon more reactive.

Answer

It neutralizes the nucleophile to prevent reaction.