用如图所示的装置进行电解,在通电一段时间后,铁电极的质量增加

用如图所示的装置进行电解,在通电一段时间后,铁电极的质量增加。

(1)写出乙中两极发生的电极反应式。

阴极:________________________________________________________________________

阳极:________________________________________________________________________

(2)写出甲中发生反应的化学方程式:___________________________________________

(3)C()C()FeAg 4个电极上析出或溶解物质的物质的量之比是________

答案

案 (1)Age===Ag Age===Ag

(2)2CuSO42H2O2Cu2H2SO4O2

(3)2∶1∶4∶4

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