CH4和H2的混合气体Vml 完全燃烧后O2 4v/3ml 则原混合气体CH4和H2的体积比是?
问题描述:
CH4和H2的混合气体Vml 完全燃烧后O2 4v/3ml 则原混合气体CH4和H2的体积比是?
答
CH4+2O2==CO2+2H2O
2H2+O2==2H2O
设:V(CH4)=x V(H2)=V-x
2x+0.5(V-x)=4V/3 x=5V/9 V-x=4V/9
V(CH4): V(H2)=5V/9:4V/9=5:4