AIPMT PRELIMS2011Chemistry-Chemical Equilibrium
AIPMT PRELIMS 2011 Chemistry Equilibrium Constants MCQ Question
Type: MCQ-numerical-Hard-Class 11
For the reaction N₂(g) + O₂(g) ⇌ 2NO(g), the equilibrium constant is K₁. The equilibrium constant is K₂ for the reaction 2NO(g) + O₂(g) ⇌ 2NO₂(g). What is K for the reaction NO₂(g) ⇌ ½ N₂(g) + ½ O₂(g)?
A
1/(K₁K₂)
B
1/(2K₁K₂)
C
1/(4K₁K₂)
D
[1/(K₁K₂)]^(1/2)
Correct Answer
Option D
Detailed Explanation
The equilibrium constant for the reverse reaction is the reciprocal of the forward reaction. For NO₂(g) ⇌ ½ N₂(g) + ½ O₂(g), K' = [1/(K₁K₂)]^(1/2).
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