说1升,0.2mol/L CH3COOH溶液 溶质CH3COOH的物质的量为0.2mol
CH3COOH水中部分电离
比方1%电离,99%保持分子状态
CH3COOH=H+ +CH3COO-
1 1
1% 1%
电离的的这部分,电离出等量的CH3COO-
于是CH3COOH的物质的量和CH3COO-物质的量依旧等于0.2mol
浓度的和也是0.2molL-
说1升,0.2mol/L CH3COOH溶液 溶质CH3COOH的物质的量为0.2mol
CH3COOH水中部分电离
比方1%电离,99%保持分子状态
CH3COOH=H+ +CH3COO-
1 1
1% 1%
电离的的这部分,电离出等量的CH3COO-
于是CH3COOH的物质的量和CH3COO-物质的量依旧等于0.2mol
浓度的和也是0.2molL-