Question

丁烷，戊烷，己烷，庚烷，有多少种同分异构体？

Answer 1

戊烷分子式C5H12,其同分异构体有三种：1.CH3-CH2-CH2-CH2-CH3正戊烷2.CH3-CH(CH3)-CH2-CH3异戊烷（2-甲基丁烷）3.C(CH3)4新戊烷（22-二甲基丙烷）己烷：CH3-(CH2)4-CH3CH3CH(CH3)-(CH2)3-CH3CH3CH2CH(CH3)-(CH2)2-CH3CH3CH(CH3)CH(CH3)CH2CH2CH3CH3CH(CH3)CH2CH(CH3)CH2CH3CH3CH(CH3)CH2CH2CH(CH3)CH3CH3CH(CH3)CH(CH3)CH(CH3)CH3庚烷：CH3-(CH2)5-CH3(CH3)2-CH-(CH2)3-CH3CH3CH2CH(CH3)CH2CH2CH3(CH3CH2)3CH(CH3)3-C-CH2CH2CH3(CH3CH2)2-C-(CH3)2(CH3)2-CH-CH(CH3)-CH2CH3(CH3)2-CH-CH2-CH-(CH3)2(CH3)3-C-CH-(CH3)2