一道化学问题

显示全部楼层 · 2011-1-25 12:07:03

CH3COONa=CH3COO-+Na+原因：CH3COO-+H2o=(应是可逆，我不会打)CH3COOH+OH-所以浓度Na+>CH3COO->OH-约等于（还有水电离的OH-但可忽略，用等号也可）CH3COOH>H+其中Na+就是0.1mol/L而氢离子浓度小于十的负七次方...

千问 · 2011-1-25 12:07:03

CH3COONa == CH3COO- + Na+
弱盐水解：CH3COO- + H2O = CH3COOH + OH-水电离：H2O = H++ OH-，故Na+ 比 CH3COO-多；OH- 比 H+多。所以浓度Na+>CH3COO->OH-约等于（水电离的OH-但可忽略）CH3COOH>H+...

千问 · 2011-1-25 12:07:03

CH3COONa电离：CH3COONa == CH3COO- + Na+弱盐水解：CH3COO- + H2O =可逆= CH3COOH + OH-水电离：H2O =可逆= H++ OH-Na+> CH3COO-> OH-> H+水解消耗，Na+ 比 CH3COO-多；OH- 比 H+多。...

千问 · 2011-1-25 12:07:03

CH3COONa电离成CH3COO-和Na+都是0.1mol/L...