对比6min和8min时各物质的浓度。是改变条件后反应逆向进行,转化量比等于计量系数比转化的CO:H2:CH3OH=0.01:0.02:0.01,这样8min后三种物质的浓度应为:CO:0.04+0.01=0.05molL-,H2:0.12+0.02=0.14、CH3OH:0.04-0.01=0.03mol/L,而8min后氢气的浓度为0.2mol/L,,所以多加了0.06mol/L×10=0.6mol的氢气;CH3OH多了0.02mol是增加了0.2molCH3OH