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【单选题】
下列有关酸效应叙述 错误 的是A.
由于 H + 存在使配体参加主反应能力降低的现象称为酸效应
B.
溶液的pH越低，EDTA的酸效应越强
C.
酸效应是EDTA特有的现象
D.
溶液的pH越高，EDTA的酸效应越弱
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