题目内容

在EDTA配位滴定中,下列有关EDTA酸效应的叙述正确的是 ( )

A. 酸效应系数愈大,配合物的稳定性愈高;
B. 酸效应系数愈小,配合物稳定性愈高;
C. 反应的pH愈大,EDTA酸效应系数愈大;
D. 选择配位滴定的指示剂与酸效应无关;

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