Answer:
It depends on the acid.
Step-by-step explanation:
The conjugate base for a Brønsted-Lowry acid is the product which is produced for the acid losing a proton. For example, the conjugate base of NH3 in:
NH3 (aq) + H2O (l) -> NH4^+ (aq) + OH^-
would be NH4^+/ the base produced from NH3 donating a H+ proton.