下列叙述中,正确的是 A.在船舶的外壳装上铜块可防止其发生电化

下列叙述中,正确的是

A.在船舶的外壳装上铜块可防止其发生电化学腐蚀

BMnO2FeCl3CuSO4都可加快H2O2的分解速率

CFeCl3溶液和Fe2(SO4)3溶液加热蒸干、灼烧都得到Fe2O3

D.用惰性电极分别电解CuCl2溶液和MgCl2溶液分别得到单质CuMg

答案

B

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