劣溪多享化学与分子科学学院 例：Na2HPO4水溶液 COLLESE OF CHEMIS TRY AND MOLECULRR SCIENCES WUHAN UNIVERSITY 零水准：H2O、HPO42 H]+H2PO4]+2LP04]=[OH]+P043] Na2CO3 H]+HC03]+2H2CO3]=[OH] Na(NH4)HPO H+]+H2PO +2[H3PO4]=[OH-]+[NH3]+[PO3-] 或溪来享 Wuhan University 例：Na2HPO4水溶液 [H+ ] + [H2PO4 - ]+2[H3PO4 ] = [OH- ] +[PO4 3- ] 零水准：H2O、HPO4 2- Na(NH4 )HPO4 [H+ ] + [H2PO4 - ]+2[H3PO4 ] = [OH- ] +[NH3 ] + [PO4 3- ] Na2CO3 [H+ ] + [HCO3 - ] + 2[H2CO3 ] = [OH- ]