差量法设该烃为CxHyCxHy+(x+y/4)O2---->xCO2+(y/2)H2O1-----1+y/410----(10+60-45)y=6若为烯烃时,该烃的分子式C3H6 若为炔烃时,该烃的分子式C4H6CH三CCH2CH3CH3C三CCH3
CxHy+(x+y/4)O2---->xCO2+y/2H2O1+y/4=25/10=2.5y=6C3H6C4H6:CH三CCH2CH3;CH3C三CCH3;