下列对一些实验事实的理论解释正确的是选项实验事实理论解释A深蓝色的[Cu（NH3）4]SO4溶液中加入乙醇析出晶体乙醇增强了溶剂的极性B用KSCN检验溶液中的Fe3+Fe3+遇SCN﹣生成血红色沉_刷题宝

题干

下列对一些实验事实的理论解释正确的是（）

选项	实验事实	理论解释
A	深蓝色的[Cu（NH₃）₄]SO₄溶液中加入乙醇析出晶体	乙醇增强了溶剂的极性
B	用KSCN检验溶液中的Fe³⁺	Fe³⁺遇SCN^﹣生成血红色沉淀
C	CH₄熔点低于CO₂	碳氢键比碳氧键的键长短、键能大
D	氮原子的第一电离能大于氧原子	氮原子2p能级半充满

A：A

B：B

C：C

D：D

上一题下一题 0.0难度选择题更新时间:2019-08-01 10:45:34

答案(点此获取答案解析）

D

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