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)密度將不會變(答案)
(b)the colcor becomes lighter
(c)解理程度減少
(D)平均摩爾質量增加
(E)壓力下降
不太懂此題的意思...
2.consider the reaction :
2SO2(g)+O2(g)→2SO3(g) 定溫
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]
他沒有出初濃度 我不會....
3.還有 請問遇到像這題要怎麼算出答案呢?(我數學不太好...)
N2O4(g)⇔2NO2(g)
K=4.66 X 10^-8
0.05 mole N2O4 在-80度下 容量1L
而且欲讓該反應式平衡
再反應平衡時，該系統的總壓力是多少
答:0.79 atm
我這樣想
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)]
列出這哩，我還是算不出X...