煤化工中常需研究不同温度下平衡常数、投料比及产率等问题.
已知:\(\rm{CO(g)+H_{2}O(g)⇌H_{2}(g)+CO_{2}(g)}\)的平衡常数随温度的变化如表:
温度\(\rm{/℃}\) | \(\rm{400}\) | \(\rm{500}\) | \(\rm{830}\) | \(\rm{1000}\) |
平均常数\(\rm{K}\) | \(\rm{10}\) | \(\rm{9}\) | \(\rm{1}\) | \(\rm{0.6}\) |
在\(\rm{830℃}\)发生上述反应,以下表中的物质的量投入恒容反应器,其中未达到平衡,需要正向移动而建立平衡状态的有\(\rm{(}\) \(\rm{)}\)
| \(\rm{A}\) | \(\rm{B}\) | \(\rm{C}\) | \(\rm{D}\) |
\(\rm{n(CO_{2})}\) | \(\rm{3}\) | \(\rm{1}\) | \(\rm{0}\) | \(\rm{1}\) |
\(\rm{n(H_{2})}\) | \(\rm{2}\) | \(\rm{1}\) | \(\rm{0}\) | \(\rm{1}\) |
\(\rm{n(CO)}\) | \(\rm{1}\) | \(\rm{2}\) | \(\rm{3}\) | \(\rm{0.5}\) |
\(\rm{n(H_{2}O)}\) | \(\rm{5}\) | \(\rm{2}\) | \(\rm{3}\) | \(\rm{2}\) |