一份溶液内含有0.275M的HC3H502,(Ka=1.3*10^-5)和0.0892M的HI,计算[H30+][OH-][C3H5O2-]和[I-].
问题描述:
一份溶液内含有0.275M的HC3H502,(Ka=1.3*10^-5)和0.0892M的HI,计算[H30+][OH-][C3H5O2-]和[I-].
答
设平衡浓度[C2H5COO-]为x mol/L.HI是一元强酸(酸性比HCl还强),在溶液中完全电离;HC3H5O2(即丙酸C2H5COOH)是一元弱酸,在溶液中部分电离:C2H5COOH = H+ + C2H5COO- Ka=1.3×10^-5 平衡时:[C2H5COO-]= x (mol/L) ,[C...