题目

25℃时,在①0.01mol/L的盐酸,②pH=2的醋酸,③pH=12的氨水,④0.01mol/L的NaOH溶液4种溶液中,由水电离出的c(H+)的大小关系是(   ) A . ②>①>④>③ B . ①=②=③=④   C . ②=③>①=④ D . ②<①<③<④ 答案:BWait till you are more _______. It’s better to be sure than sorry. [  ] A.inspiredB.certainC.calmD.satisfied
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