+[H2CO3]=[NH3]+[OH-]+[CO32-]Р3 (1)NH3 [NH4+]+[H+]=[OH-]Р(2)NH4Cl [H+]=[NH3]+[OH-]Р(3)Na2CO3 [H+]+[HCO-3]+2[H2CO3]=[OH-]Р(4)KH2PO4 [H+]+[H3PO4]=[HPO42-]+2[PO43-]+[OH-]Р(5)NaAc+H3BO3 [H+]+[HAc]=[H2BO3-]+[OH-]Р4 (1)MBE:[K+]=c [H2P]+[HP-]+[P2-]=cР CBE:[K+]+[H+]=2[P2-]+[OH-]+[HP-]Р PBE:[H+]+[H2P]=[HP-]+[OH-]Р(2) MBE:[Na+]=[NH4+]=c [H2PO4-]+[H3PO4]+[HPO42-]+[PO43-]=cРCBE:[Na+]+[NH4+]+[H+]=[OH-]+2[HPO42-]+[PO43-]РPBE:[H+]+[H2PO4-]+2[H3PO4]=[OH-]+[NH3]+[PO43-]Р(3) MBE:[NH4+]=c [H3PO4]+[H2PO4-]+[HPO42-]+[PO43-]=cР CBE:[NH4+]+[H+]=[H2PO4]+2[HPO42-]+3[PO43-]+[OH-]Р PBE:[H+]+[H3PO4]=[OH-]+[NH3]+[HPO42-]+2[PO43-]Р(4) MBE:[NH4+]=c [CN-]+[HCN]=cР CBE:[NH4+]+[H+]=[OH-]+[CN-]+[HCN]Р PBE:[HCN]+[H+]=[NH3]+[OH-]Р5 H2SO4,KOH用间接配配制法配成标准溶液。邻苯二甲酸氢钾,无水碳酸钠用直接配制法配成标准溶液。РH2SO4选用无水Na2CO3,KOH选用邻苯二甲酸氢钾。Р五、计算题Р1 Р2 Р3 Р4