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;阴极出氢效率为100%。已知电解产生H 2 、O 2 的气体体积分别为9.0L和2.24L(标准条件下),则生成H 2 S 2 O 8 的摩尔数为
【简答题】Many Americans use smartphones for most or all of their day-to-day 1 activities. One result is that people have gotten faster and better at typing emails and text messages on their phones. But how fas...