For which of the following equilibria does Kc correspond to the acid-dissociation constant, Ka, of H2PO4 For which of the following equilibria does Kc correspond to the acid-dissociation constant, Ka, of H2PO4 For which of the following equilibria does Kc correspond to the acid-dissociation constant, Ka, of H2PO4 For which of the following equilibria does Kc correspond to the acid-dissociation constant, Ka, of H2PO4 - ? H3PO4(aq) + H2O(l) H3O+(aq) + H2PO4 - (aq) H2PO4 - (aq) + H2O(l) H3O+(aq) + HPO42 - (aq) H2PO4 - (aq) + H2O(l) H3PO4(aq) + OH - (aq) H2PO4 - (aq) + H3O+(aq) H3PO4(aq) + H2O(l) HPO42 - (aq) + H2O(l) H2PO4 - (aq) + OH - (aq)