用石墨作电极电解200 mL CuSO4溶液,电解过程中电子转移的物质的量n(e

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问题:

用石墨作电极电解200 mL CuSO4溶液,电解过程中电子转移的物质的量n(e)与产生气体的体积V(g)(标准状况)的关系如图所示,下列说法正确的是              (  )

A.电解前CuSO4溶液的物质的量浓度为2 mol/L

B.电解后所得溶液中c(H)=2 mol/L

C.当n(e)=0.6 mol时,V(H2):V(O2)=2:3

D.向电解后的溶液中加入16 g CuO,则溶液可恢复为电解前的浓度

考点:电解池原理电解池电极反应式的书写
题型:选择题

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A.7

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