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Equilibrium · NEET Preparation Chemistry

For the reaction 2SO2(g) + O2(g) rightleftharpoons 2SO3(g), the unit of equilibrium constant Kc is:

Practice question from Equilibrium (NEET Preparation Chemistry), with the correct answer and a step-by-step solution.

easy · MCQ · Q-B4AC3B

For the reaction 2SO2(g)+O2(g)⇌2SO3(g)2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g), the unit of equilibrium constant KcK_c is:

  1. A.L mol^-1Correct answer
  2. B.mol L^-1
  3. C.L^2 mol^-2
  4. D.no unit

Solution

The equilibrium constant KcK_c for the reaction is given by Kc=[SO3]2[SO2]2[O2]K_c = \frac{[SO_3]^2}{[SO_2]^2[O_2]}. The units will be (mol L−1)2/[(mol L−1)2×(mol L−1)]=L mol−1(\text{mol L}^{-1})^2 / [(\text{mol L}^{-1})^2 \times (\text{mol L}^{-1})] = \text{L mol}^{-1}.

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