4.
某化学反应\(\rm{2A(g){≒}B(g)D(g)}\) 在\(\rm{4}\)种不同条件下进行,\(\rm{B}\)和\(\rm{D}\)的起始浓度为\(\rm{0}\),反应物\(\rm{A}\) 的浓度\(\rm{(mol{⋅}L^{{-}1})}\) 随反应时间 \(\rm{(min)}\) 的变化情况如表:
实验 序号 | | \(\rm{0}\) | \(\rm{10}\) | \(\rm{20}\) | \(\rm{30}\) | \(\rm{40}\) | \(\rm{50}\) | \(\rm{60}\) |
\(\rm{1}\) | \(\rm{800{℃}}\) | \(\rm{1{.}0}\) | \(\rm{0{.}80}\) | \(\rm{0{.}67}\) | \(\rm{0{.}57}\) | \(\rm{0{.}50}\) | \(\rm{0{.}50}\) | \(\rm{0{.}50}\) |
\(\rm{2}\) | \(\rm{800{℃}}\) | \(\rm{1{.}0}\) | \(\rm{0{.}60}\) | \(\rm{0{.}50}\) | \(\rm{0{.}50}\) | \(\rm{0{.}50}\) | \(\rm{0{.}50}\) | \(\rm{0{.}50}\) |
\(\rm{3}\) | \(\rm{800{℃}}\) | \(\rm{C_{3}}\) | \(\rm{0{.}92}\) | \(\rm{0{.}75}\) | \(\rm{0{.}63}\) | \(\rm{0{.}60}\) | \(\rm{0{.}60}\) | \(\rm{0{.}60}\) |
\(\rm{4}\) | \(\rm{820{℃}}\) | \(\rm{1{.}0}\) | \(\rm{0{.}40}\) | \(\rm{0{.}25}\) | \(\rm{0{.}20}\) | \(\rm{0{.}20}\) | \(\rm{0{.}20}\) | \(\rm{0{.}20}\) |
根据上述数据,完成下列填空:
\(\rm{(1)}\)实验\(\rm{1}\)中,在\(\rm{10{~}20min}\)时间内,以\(\rm{A}\)的速率表示的平均反应速率为 ______\(\rm{mol{⋅}L^{{-}1}{⋅}{mi}n^{{-}1}}\),反应经 ______\(\rm{ min}\)就达到平衡.
\(\rm{(2)}\)实验\(\rm{2}\)中,\(\rm{A}\)的初始浓度\(\rm{c_{2}{=}}\) ______\(\rm{mol{⋅}L^{{-}1}}\),反应经 ______\(\rm{ min}\)就达到平衡.
\(\rm{(3)}\)实验\(\rm{4}\)比实验\(\rm{1}\)的反应速率 ______\(\rm{(}\)填“快”或“慢”\(\rm{)}\),原因是 ______ .