Q12 / 160 · TS EAMCET 2016 · Chemistry

Which one of the following is correct?

  • A
    The equilibrium constant $\left(K_c\right)$ is independent of temperature
  • Correct answer
    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 $\left(K_c\right)$ for the reaction $\mathrm{Ni}(s)+4 \mathrm{CO}(g) \rightleftharpoons \mathrm{Ni}(\mathrm{CO})_4(g) \text { is, } \frac{\left[\mathrm{Ni}(\mathrm{CO})_4\right]}{[\mathrm{CO}]}$

Solution

Correct option is (b) as (a), (c) and (d) are false. (a) $K_c$ depends on temperature. (c) At equilibrium, both the rates are equal. (d) $K_c=\frac{\left[\mathrm{Ni}(\mathrm{CO})_4\right]}{[\mathrm{CO}]^4}$

Hence, the correct answer is option: 'B'.

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