某学生为了验证锌、银、铜三种金属的活动性顺序,设计了五个实验:

某学生为了验证锌、银、铜三种金属的活动性顺序,设计了五个实验:①ZnCu分别放入稀盐酸中;②Ag放入Cu(NO3)2溶液中;

Cu放入AgNO3溶液中;④Cu放入ZnSO4溶液中;⑤Zn放入AgNO3溶液中。下列实验组合不能验证锌、银、铜三种金属活动性顺序的是 (  )

A.①②          B.①③          C.②④          D.①⑤

答案

【解析】D。将ZnCu分别放入稀盐酸中,Zn能与稀盐酸反应,Cu不与稀盐酸反应,可以确定ZnCu活泼,Zn放入AgNO3的溶液中能反应,可以确定ZnAg活泼,但①⑤组合不能比较CuAg的活动性,D的实验组合不正确。

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