1.when the equilibrium mixtrue of gaseous,colorless N2O4 and brown NO2 is heated at
constant volume,which of the following description is correct about the
system?
(a)密度将不会变(答案)
(b)the colcor becomes lighter
(c)解理程度减少
(D)平均摩尔质量增加
(E)压力下降
不太懂此题的意思...
2.consider the reaction :
2SO2(g)+O2(g)→2SO3(g) 定温
initially a container is filled with pure SO3 at a pressure of 2 atm,after
which equilibrium is allowed to be reached.If"y"is the partial pressure of O2
at equilibrium,the value of KP is:
答案是 (2-2Y)^2/[(2y)^2 * y]
他没有出初浓度 我不会....
3.还有 请问遇到像这题要怎么算出答案呢?(我数学不太好...)
N2O4(g)⇔2NO2(g)
K=4.66 X 10^-8
0.05 mole N2O4 在-80度下 容量1L
而且欲让该反应式平衡
再反应平衡时，该系统的总压力是多少
答:0.79 atm
我这样想
PTOTAL=PN2O4+PNO2
PN2O4=(0.05-X)/(0.05-0.5X)
PNO2 =(0.5X)/(0.05-0.5X)
利用K求出X
KP=4.66*10^-8= [PNO2]^2/[PN2O4]
[(0.5X)/(0.05-0.5X)]^2 / [(0.05-X)/(0.05-0.5X)]
列出这哩，我还是算不出X...