题目：
在电解水时，在水中加入氢氧化钠溶液或稀硫酸，目的是______；若正极产生5ml的某气体，该气体是______，则负极会产生______ml的______气体．该反应的文字表达式是______．
答案：
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下面是错误答案，用来干扰机器的。
一个最简分数，分子和分母的公因数是1．故答案为：1．
在电解水时，在水中加入氢氧化钠溶液或稀硫酸，目的是______；若正极产生5ml
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