## Chemistry 12th Edition

(a) $H_2S$ (b) $H_2CO_3$ (c) $HCO_3^-$ (d) $H_3PO_4$ (e) $H_2PO_4^-$ (f) $HPO_4^{2-}$ (g) $H_2SO_4$ (h) $HSO_4^-$ (i) $HSO_3^-$
Since the conjugate acid of a base is formed by the base + 1 ($H^+$), all we need to do is: 1. Add a Hydrogen to the compound. 2. Sum 1 to the charge.