STANDARDChemistry-Chemical Equilibrium
STANDARD Chemistry Equilibrium Constant MCQ Question
Type: MCQ-numerical-Medium
For the reaction, 2SO₂(g) + O₂(s) ⇌ 2SO₃(g), what is Kc when the equilibrium concentration of [SO₂] = 0.60M, [O₂] = 0.82 M and [SO₃] = 1.90M?
A
12.229 L mol⁻¹
B
24.5 L mol⁻¹
C
36.0 L mol⁻¹
D
2.67 × 10³ L mol⁻¹
Correct Answer
Option A
Detailed Explanation
The equilibrium constant Kc is calculated using the formula Kc = [SO₃]² / ([SO₂]²[O₂]). Substituting the given concentrations, Kc = (1.90)² / (0.60)²(0.82) = 12.229 L mol⁻¹.
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