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【单选题】
在 EDTA 配合滴定中,下列有关酸效应的叙述, (  ) 是正确。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
酸效应系数愈大，配合物稳定性愈大 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
B.
PH 值愈大，酸效应系数愈大
C.
酸效应系数愈大，配合滴定曲线的 pM 突跃范围愈大 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
酸效应系数愈小，配合物条件稳定常数愈大 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
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