1.
\(\rm{Bodensteins}\)研究反应:\(\rm{H_{2}(g)+I_{2}(g)\overset{}{⇌} 2HI(g)}\) \(\rm{ΔH < 0}\),温度\(\rm{T}\)时,在两个体积均为\(\rm{1 L}\)的密闭容器中进行实验,测得气体混合物中碘化氢的物质的量分数\(\rm{w(HI)}\)与反应时间\(\rm{t}\)的关系如下表:
容器编号 | 起始物质 | \(\rm{t/min}\) | \(\rm{0}\) | \(\rm{20}\) | \(\rm{40}\) | \(\rm{60}\) | \(\rm{80}\) | \(\rm{100}\) |
Ⅰ | \(\rm{0.5 mol I_{2}}\)、\(\rm{0.5 mol H_{2}}\) | \(\rm{w(HI)/\%}\) | \(\rm{0}\) | \(\rm{50}\) | \(\rm{68}\) | \(\rm{76}\) | \(\rm{80}\) | \(\rm{80}\) |
Ⅱ | \(\rm{x mol HI}\) | \(\rm{w(HI)/\%}\) | \(\rm{100}\) | \(\rm{91}\) | \(\rm{84}\) | \(\rm{81}\) | \(\rm{80}\) | \(\rm{80}\) |
研究发现,上述反应中\(\rm{v_{正}=k_{a}·w(H_{2})·w(I_{2})}\),\(\rm{v_{逆}=k_{b}·w^{2}(HI)}\),其中\(\rm{k_{a}}\)、\(\rm{k_{b}}\)为常数。下列说法正确的是