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JIPMER2013ChemistryChemical Equilibrium

The value of K_c for the reaction, 2 A B+C is 2 10⁻³ . At a given time, if the composition of reaction mixture is [A]=[B]=[C]=3 10⁻³ M . Which is true?

Options

  1. AThe reaction will proceed in forward direction
  2. BThe reaction will proceed in backward direction
  3. CThe reaction will proceed in any direction
  4. DNone of the above

Correct answer

B. The reaction will proceed in backward direction

Step-by-step solution

Reaction quotient, Q_C=[B][C] /[A]^2 as as [A]=[B]=[C]=3 10⁻⁴ M Q_C= (3 10⁻⁴ ) (3 10⁻⁴ ) / (3 10⁻⁴ )^2=1 As Q_C K_c , so the reaction will proceed in the reverse direction.

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