CxHyOz+(x+y\4-z\2)=xCO2+y\2H2O
1mol x+y\4-z\2 x 0.5y
可知x=0.5y,x+y\4-z\2=2 n(o2)=44.8L÷22.4L\mol
又y＜或=2x+2 推知x=2 y=4 z=2