1.N2O4=2NO2vNO2=0.01/500*1000=0.02mol/L.svNO=0.5vNO2=0.01mol/L.s2.设N2O4百分含量X,NO2有YX+Y=192X+46Y=28.75*2X=0.25,Y=0.75设现在的气体为1那么原来的N2O4的含量比上现在的气体为0.25+0.75*1/2=0.625nN2O4=0.25/0.625*0.125=0.05mol3.1/0.625=1.6倍