AIPMT MAINS2012Chemistry-Chemical Equilibrium
AIPMT MAINS 2012 Chemistry Equilibrium Constants MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Given that the equilibrium constant for the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) has a value of 278 at a particular temperature. What is the value of the equilibrium constant for the following reaction at the same temperature?
SO₃(g) ⇌ SO₂(g) + 1/2 Ω₂(g)
A
1.8 × 10⁻³
B
3.6 × 10⁻³
C
6.0 × 10⁻²
D
1.3 × 10⁻⁵
Correct Answer
Option C
Detailed Explanation
The equilibrium constant for the reverse reaction is the reciprocal of the original reaction's constant. Therefore, K' = 1/√278 = 6.0 × 10⁻².
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