Question

分子式为CxHyO2的有机物1mol,完全燃烧后产生CO2和H2O的体积相等燃烧所消耗的O2在标况下为44.8L分子式中

Answer 1

CxHyO2 + (x+y/4-1) O2 → x CO2 + y/2 H2O

1 x+y/4-1 x y/2

1 2 x y/2

由题意知 x = y/2,x + y/4 - 1 = 2,解得：x = 2,y = 4.