问题
选择题
已知0.02 mol/L-1CH3COOH溶液和0.01 mol /L-1NaOH溶液以等体积混和后溶液呈酸性，则该混合液中微粒浓度关系正确的[ ]
A．c (CH3COO-)＞c (Na+)
B．c (Na+) + c (H+) =c (OH-) +c (CH3COOH)+c (CH3COO-)
C．c (CH3COOH)＞c (CH3COO-)
D．c (CH3COOH)+c (CH3COO-)=0.02 mol/L-1
答案
答案：A