Which one of the following statements is correct?

  • A
    The equilibrium constant $(K_c)$ is independent of temperature.
  • B
    The value of $K_c$ is independent of initial concentrations of reactants and products.
  • C
    At equilibrium,the rate of the forward reaction is twice the rate of the backward reaction.
  • D
    The equilibrium constant $(K_c)$ for the reaction $Ni_{(s)} + 4CO_{(g)} \rightleftharpoons Ni(CO)_{4(g)}$ is $\frac{[Ni(CO)_4]}{[CO]^4}$.

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