如图是电解水的实验装置,对该实验描述正确的是A.正极产生的气

如图是电解水的实验装置,对该实验描述正确的是
A.正极产生的气体是氢气
B.电解过程中水分子发生了改变
C.生成氧气、氢气的体积比约为2:1
D.该实验能证明水是由氢气和氧气组成

答案

B解析:

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