Final answer:
A conjugate acid is the particle produced when a base accepts a proton, while a conjugate base is the particle produced when an acid donates a proton.
Step-by-step explanation:
A conjugate acid is defined as the particle produced when a base accepts a proton. It is the species that donates a hydrogen in the forward reaction. On the other hand, a conjugate base is the particle produced when an acid donates a proton and accepts a hydrogen in the reverse reaction.
For example, in the ionization of HCl, HCl is the conjugate acid and Cl- is the conjugate base. The conjugate acid-base pair is related to the loss and gain of a single hydrogen ion. The reactants in the acid-base reaction are the acid and base, while the products are the conjugate base and conjugate acid.