Question

在一个密闭容器中充入一定量的H2和N2,发生反应,经3s末的氢气的反应速率为0.3mol/(L)

在一密闭容器中充入一定量的H2和N2发生反应N2+3H22NH3,经测定3秒末的氢气的反应速率为0.3mol·L-1·S-1,则6秒末NH3的浓度为 A.1.2mol/L B.大于1.2mol/L C.小于1.2mol/L D.不能确定
求解析

Answer 1

N2 + 3H2 = 2NH3
1 3 2
0.3 0.2
0.3X6 0.2X6
如果按3s末的速度作为平均速度算是1.2MOI，但是反应速度是迅速降低的，故<1.2

Answer 2

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Answer 3

C