H 2 S 2 O 8 可由电解法制取,阳极反应为:2H 2 SO 4 → H 2 S 2 O 8 + 2H + + 2e - ,阳极副反应为O 2 的析出。阴极析氢效率为100%,已知电解产生H 2 ,O 2 的气体体积分别为9.0 L和2.24 L(标准态下),则生成H 2 S 2 O 8 的物质的量为: ( )
【简答题】Chairman Mao once said,“It is not hard to do one good deed. It is hard to do good deeds all your life.” Guo Mingyi, a 52-year-old worker in Anshan, Liaoning did just that. Over the past 20 years, Guo ...