STANDARDChemistry-Chemical Equilibrium
STANDARD Chemistry Equilibrium Constant MCQ Question
Type: MCQ-numerical-Medium
For a reaction, 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), 1.5 moles of SO₂ and 1 mole of O₂ are taken in a 2 L vessel. At equilibrium the concentration of SO₃ was found to be 0.35 mol L⁻¹. The Kc for the reaction would be
A
5.1 L mol⁻¹
B
1.4 L mol⁻¹
C
0.6 L mol⁻¹
D
2.35 L mol⁻¹
Correct Answer
Option D
Detailed Explanation
The equilibrium concentrations are calculated using the initial moles and the change in moles at equilibrium. The equilibrium constant Kc is calculated using the formula Kc = [SO₃]² / ([SO₂]²[O₂]), which gives 2.35 L mol⁻¹.
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