For the reaction 1,0,(g) =2N0,(g), the degree of dissociation at equilibrium is 0.2 at 1 atm pressure. The equilibrium constant K will be 1) 1/2 2) 1/4 3) 1/6 4) 1/8 P
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Class 11
>>Chemistry
>>Equilibrium
>>Homogeneous and Heterogeneous Equilibria
>>For the reaction N2O4(g) 2N...
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For the reaction N
2
O
4
(g)⇌2NO
2
(g), the degree of dissociation at equilibrium is 0.2 at 1 atm pressure.
The equilibrium constant K
p
will be:
Hard
Solution
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Correct option is
C
6
1
1−α
1
N
2
O
4
⇌
2α
0
2NO
2
[Total moles =1−α+2α=1+α]
Partial pressure
1+α
1−α
×P
1+α
2α
×P
Given, α=0.2,P=1
Partial pressure of N
2
O
4
=
1+0.2
1−0.2
×1=
1.2
0.8
=
3
2
p
NO
2
=
1+0.2
2×0.2
×1=
1.2
0.4
=
3
1
K
p
=
[p
N
2
O
4
]
2
[p
NO
2
]
2
=
3×3×2
1×1×3
=
6
1
Hence, the correct answer is C
Explanation:
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