题目内容

1、在近紫外可见光区有吸收的有机化合物是（）

A. CH3―CH2―CH2―CH3
B．CH3―CH2―CH2―OH
CH2＝CH2
D. CH3―CH＝CH―CH＝CH―CH3

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下列化合物中，同时具有n→π、σ→σ、π→π*跃迁的化合物为（）

A. 一氯代甲苯
B. 乙醇
C. 丁二烯
D. 一氯甲烷

{某非水溶性化合物，在200nm～250nm有吸收，当测定其紫外可见光谱时，应选用的溶剂为（）}

A. CH3-CH2-CH2-CH2-CH3
B. CH3-CH2-OH
CH2=CH-CH2-CH=CH2
D. CH3-CH=CH-CH=CH-CH3

采用什么办法区别n→π跃迁和π→π？

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