6.
在\(\rm{2L}\)密闭容器中,\(\rm{800℃}\)时反应\(\rm{2NO(g)+O_{2}(g)⇌2NO_{2}(g)}\)体系中,\(\rm{n(NO)}\)随时间的变化如下表:
时间\(\rm{(s)}\) | \(\rm{0}\) | \(\rm{1}\) | \(\rm{2}\) | \(\rm{3}\) | \(\rm{4}\) | \(\rm{5}\) |
\(\rm{n(NO)/mol}\) | \(\rm{0.020}\) | \(\rm{0.010}\) | \(\rm{0.008}\) | \(\rm{0.007}\) | \(\rm{0.007}\) | \(\rm{0.007}\) |
\(\rm{(1)A}\)点处,\(\rm{v(}\)正\(\rm{)}\) ______ \(\rm{v(}\)逆\(\rm{)}\),\(\rm{A}\)点正反应速率 ______ \(\rm{B}\)点正反应速率\(\rm{(}\)用“大于”、“小于”或“等于”填空\(\rm{)}\).
\(\rm{(2)}\)图中表示\(\rm{O_{2}}\)变化的曲线是 ______ \(\rm{.}\)用\(\rm{NO_{2}}\)表示从\(\rm{0~2s}\)内该反应的平均速率\(\rm{v=}\) ______ .
\(\rm{(3)}\)能说明该反应已经达到平衡状态的是 ______ .
\(\rm{a.NO}\)、\(\rm{O_{2}}\)、\(\rm{NO_{2}}\)的浓度不变
\(\rm{b.v(NO)=2v(O_{2})c.NO}\)、\(\rm{O_{2}}\)、\(\rm{NO_{2}}\)的分子数之比为\(\rm{2}\):\(\rm{1}\):\(\rm{2}\)
\(\rm{d.v_{逆}(NO_{2})=2v_{正}(O_{2})}\)
\(\rm{(4)}\)能使该反应的反应速率增大的是 ______ .
\(\rm{a.}\)适当升高温度 \(\rm{b.}\)及时分离出\(\rm{NO_{2}}\)气体
\(\rm{c.}\)增大\(\rm{O_{2}}\)的浓度 \(\rm{d.}\)选择高效的催化剂.