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NCERT Class XI Chemistry Equilibrium Solutions

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Question : 6
Total: 73
For the following equilibrium, Kc = 6.3 × 1014 at 1000 K.
NO(g)+O3(g) ⇌ NO2(g)+O2(g) Both the forward and reverse reactions in the equilibrium are elementary bimolecular reactions. What is Kc , for the reverse reaction?
Solution:  
NO(g)+O3(g) ⇌ NO2(g)+O2(g)
Kc =
[NO2][O2]
[NO][O3]
 = 6.3 × 1014
For the reverse reaction, Kc′ =
[NO][O3]
[NO2][O2]
 =
1
Kc
 =
1
6.3×1014
 = 1.587 × 10−15
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