设该烃分子式为CxHy,则,燃烧的化学方程式为:
2CxHy+(2x+y)O2=====2xCO2+yH2O
2(12x+y) 88x
8.8 26.4
依题意得:2(12x+y) :8.8 =88x:26.4,化简可得:x:y=3:8,该烃的分子式为C3H8.
设该烃分子式为CxHy,则,燃烧的化学方程式为:
2CxHy+(2x+y)O2=====2xCO2+yH2O
2(12x+y) 88x
8.8 26.4
依题意得:2(12x+y) :8.8 =88x:26.4,化简可得:x:y=3:8,该烃的分子式为C3H8.