AIIMS2000Chemistry-Chemical Equilibrium
AIIMS 2000 Chemistry Equilibrium Constant MCQ Question
Type: MCQ-numerical-Medium-Class 11
A vessel of one litre capacity containing 1 mole of SO₃ is heated till a state of equilibrium is attained. 2SO₃ (g) ⇌ 2SO₂ (g) + O₂ (g). At equilibrium, 0.6 moles of SO₂ had formed. The value of equilibrium constant is
A
0.18
B
0.36
C
0.45
D
0.68
Correct Answer
Option D
Detailed Explanation
At equilibrium, 0.6 moles of SO₂ are formed, which means 0.3 moles of O₂ are formed. The equilibrium constant Kc is calculated using the expression Kc = [SO₂]²[O₂]/[SO₃]². Substituting the equilibrium concentrations gives Kc = 0.36.
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