§1-3水溶液中的解离平衡
16 §1-3 水溶液中的解离平衡
3-1-元亚酸、勒的解璃平衡 1解离常数 HAC +ho=hot+Ac HAC=Ht+Ac Kie(ionization) 0(c(H)/c°)c(Ac)/c°)c(H)c(Ac) (acidity) (C(HAc)ce C(HAC NH3+H2O=NH4 +Oh 。=c(NH)cOH basicity) C(NH3)
17 3-1 一元弱酸、弱碱的解离平衡 1.解离常数 HAc＋H2O＝H3O+＋Ac－ HAc＝H+＋Ac－ Ki (ionization) (HAc) (H ) (Ac ) ( (HAc)/ ) ( (H )/ )( (Ac )/ ) c c c c c c c c c Ka + − + − = = (acidity) NH3＋H2O＝NH4 +＋OH－ (NH ) (NH ) (OH ) 3 4 c c c Kb + − = (basicity)