Which Functional Groups Can Act as Acids

Question

Which functional groups can act as acids?
A) amino and sulfhydryl
B) carbonyl and carboxyl
C) carboxyl and phosphate
D) hydroxyl and aldehyde
E) ketone and amino

Accepted Answer

Carboxyl and phosphate groups can act as acids as they have a hydrogen ion (H+) that can be donated to a base. The hydrogen ion is released from the carboxyl or phosphate groups, resulting in the formation of a negatively charged ion (ionization).