在紫外可见光区有吸收的化合物()
A: CH3—CH2—CH3
B: CH3—CH2OH
C: CH2=CH—CH2—CH=CH2
D: CH3—CH=CH=CH—CH3
A: CH3—CH2—CH3
B: CH3—CH2OH
C: CH2=CH—CH2—CH=CH2
D: CH3—CH=CH=CH—CH3
举一反三
- 在紫外可见光区有吸收的化合物是 A: CH3–CH2–CH3 B: CH2=CH–CH2–CH=CH2 C: CH3–CH2–OH D: CH3–CH=CH–CH=CH–OH
- 下列化合物中有顺反异构体的是( ) A: CH3 C≡CCH3 B: CH3 CH2 CH= CH2 C: CH3 CH= CH CH3 D: (CH3 CH2) 2 C=CH CH3
- 下列哪一项属于ω-3型不饱和脂肪酸()。 A: CH3(CH2)3(CH2CH=CH)3(CH2)4COOH B: CH3(CH2)5CH=CH(CH2)7COOH C: CH3(CH2CH=CH)3(CH2)7COOH D: CH3(CH2)14COOH
- 根据次序规则,下列基团大小排列顺序正确的是: A: -CH3>-CH2CH3>-CH(CH3)2>-C(CH3)3 B: -CH3>-CH(CH3)2>-CH2CH3>-C(CH3)3 C: -C(CH3)3>-CH(CH3)2>-CH2CH3>-CH3 D: -C(CH3)3>-CH2CH3>-CH(CH3)2>-CH3 E: -C(CH3)3>-CH3>-CH(CH3)2>-CH2CH3
- CH3—CH—CH2—CH2—CH3,CH下面接CL,这个为什么CH3放在前面呢,为什么不放CH,CH2呢?