1.
温度为\(\rm{T}\)时,在\(\rm{4.0L}\)恒容密闭容器中充入\(\rm{2.0mol}\) \(\rm{PCl_{5}}\),发生反应:\(\rm{PCl_{5}(g)⇌PCl_{3}(g)+Cl_{2}(g)}\),反应时间\(\rm{(t)}\)与容器内气体总压强\(\rm{(p)}\)的数据见表:
\(\rm{t/s}\) | \(\rm{0}\) | \(\rm{50}\) | \(\rm{150}\) | \(\rm{250}\) | \(\rm{350}\) |
总压强\(\rm{p/100kPa}\) | \(\rm{100}\) | \(\rm{116}\) | \(\rm{119}\) | \(\rm{120}\) | \(\rm{120}\) |
\(\rm{(1)}\)由总压强\(\rm{p}\)和起始压强\(\rm{p_{0}}\)计算反应物\(\rm{PCl_{5}}\)的转化率\(\rm{α(PCl_{5})}\)的表达式为?平衡时\(\rm{PCl_{5}}\)的转化率为多少?
\(\rm{(2)}\)反应在前\(\rm{50s}\)的平均速率\(\rm{v(PCl_{3})}\)为多少?
\(\rm{(3)}\)该温度下的平衡常数为多少?