Conjugate acid

1. Oct 26, 2004

M Usman

Difference between acid and conjugate acid

2. Oct 26, 2004

chem_tr

Hello, suppose that an acid is HA and its conjugate base is A-. An acid is the (more) protonated form of the common anion, and the conjugate base is less (or not) protonated one.

For example, $H_3PO_4$ is an acid, and its conjugate base is $H_2PO_4^-$. $H_2PO_4^-$ may be another acid, yet less powerful than the previous one, for its conjugate base, $HPO_4^{2-}$, which is a stronger acid than $PO_4^{3-}$

Hope you got what conjugate acid/base pair means.