For the gaseous equilibrium , it is found that is exactly equal to . At what absolute temperature is — Chemical Equilibrium Chemistry Question

Question

For the gaseous equilibrium $N_2O_4(g) \rightleftharpoons 2NO_2(g)$, it is found that $K_p$ is exactly equal to $K_c$. At what absolute temperature $T$ is this condition attained? (Use $R \approx 0.0821\text{ L atm K}^{-1}\text{mol}^{-1}$)