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NEET2018ChemistryChemical EquilibriumActual

In the given reaction : A+2 B 2 C 2 moles each of A and B present in 10 ~L of solution combine to form 1 mole of C . Calculate K_c for the reaction.

Options

  1. A1.5
  2. B6.67
  3. C0.15
  4. D2.3

Correct answer

B. 6.67

Step-by-step solution

A+2 B 2 C As 1 mole of C is formed at equilibrium, 2 x=1 x=0.5 Number of moles of A at equilibrium =1.5, B=1 and C=1 Equilibrium concentration of A=1.5 / 10 gathered B=1 / 10 and C=1 / 10 K_c= [C]^2 [A][B]^2 = [1 / 10]^2 [1.5 / 10][1 / 10]^2 =6.67 gathered

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