高二有机化学C7H14有多少种同分异构体

非常多的。毕竟碳数有7个：
1-庚烯 CH3CH2CH2CH2CH2CH=CH2 2-庚烯 CH3CH2CH2CH2CH=CHCH3 3-庚烯 CH3CH2CH2CH=CHCH2CH3 2-甲基-1-已烯 CH3CH2CH2CH2C=CH2 CH3 3-甲基-1-已烯 CH3CH2CH2CHCH=CH2 CH3 4-甲基-1-已烯 CH3CH2CHCH2CH=CH2 CH3 5-甲基-1-已烯 CH3CHCH2CH2CH=CH2 CH3 2-甲基-2-已烯 CH3CH2CH2CH=CCH3 CH3 3-甲基-2-已烯 CH3CH2CH2C=CHCH3 CH3 4-甲基-2-已烯 CH3CH2CHCH=CHCH3 CH3 5-甲基-2-已烯 CH3CHCH2CH=CHCH3 CH3 2-甲基-3-已烯 CH3CH2CH=CHCHCH3 CH3 3-甲基-3-已烯 CH3CH2CH=CCH2CH3 CH3 4-甲基-3-已烯、5-甲基-3-已烯命名错误 实际上4-甲基-3-已烯3-甲基-3-已烯；5-甲基-3-已烯2-甲基-3-已烯 23-二甲基-1-戊烯 CH3CH2CH C=CH2 CH3CH3 24-二甲基-1-戊烯 CH3CH CH2C=CH2 CH3 CH3 33-二甲基-1-戊烯 CH3 CH3CH2C CH=CH2 CH3 34-二甲基-1-戊烯 CH3CH CH CH=CH2 CH3 CH3 44-二甲基-1-戊烯 CH3 CH3C CH2CH=CH2 CH3 23-二甲基-2-戊烯 CH3CH2C = C CH3 CH3CH3 24-二甲基-2-戊烯 CH3CH CH = C CH3 CH3 CH3 34-二甲基-2-戊烯 CH3CH C = CH CH3 CH3CH3 44-二甲基-2-戊烯 CH3 CH3C CH = CHCH3 CH3 3-乙基-1-戊烯 CH3CH2CH CH=CH2 C2H5 3-乙基-2-戊烯 CH3CH2C=CHCH3 C2H5 233-三甲基-1-丁烯 CH3 CH3C C= CH2 CH3CH3

54种，碳链异构（不算环状）链状的有8种，带有碳碳双键后有27种同分异构，环装的碳链异构也有27种，共54种，仅供参考