试题与答案

用NA表示阿伏加德罗常数,以下说法正确的是 [ ] A.1 mol乙烷中的氢原子

题型:选择题

题目:

用NA表示阿伏加德罗常数,以下说法正确的是

[     ]

A.1 mol乙烷中的氢原子被氯原子完全取代,需要氯气分子数为 4 NA

B.1 mol的NO2 与水完全反应转移电子数为NA

C.在标准状况下2.24 L O2 和3.2 g O3含有氧原子都为0.2 NA .

D.在标准状况下2.24 L丙烷和戊烷混合物含分子个数为0.1 NA.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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