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The gas A 2 in the left flask allowed to react with gas B 2 present in right flask as, A 2 g + B 2 g ⇌ 2 AB g ; K c = 4 at 27 o C. What is the concentration of AB when equilibrium is established?

Options

  1. A1.33 M
  2. B2.66 M
  3. C0.66 M
  4. D0.33 M

Correct answer

C. 0.66 M

Step-by-step solution

K c = AB 2 A 2 B 2 K c = 4 x 2 2 - x 4 - x ⇒ x = 3 2 2 4 = 1.33 mole AB g = 2 × 1 .33 4 = 0 .66 M

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