试题与答案

设NA为阿伏加德罗常数的值。下列叙述正确的是( ) A.1 mol甲醇中含有C—

题型:选择题

题目:

设NA为阿伏加德罗常数的值。下列叙述正确的是(  )

A.1 mol甲醇中含有C—H键的数目为4NA

B.25 ℃,pH=13的NaOH溶液中含有OH的数目为 0.1NA

C.标准状况下,2.24 L己烷含有分子的数目为0.1NA

D.常温常压下,Na2O2与足量H2O反应,共生成0.2 mol O2,转移电子的数目为0.4NA

答案:

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