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【单选题】
在氧化还原滴定法中,对于1 : 1类型的反应,一般氧化剂和还原剂标准电位的差值至少应( )V才可用氧化还原指示剂指示滴定终点。
A.
大于0.2
B.
为0.2-0.4
C.
大于0.4
D.
大于0. 6
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