The equation is a mathematically true relationship for which of the following reactions? — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

Rearranging gives $\log_{10}(K_p/K_c) = -\log_{10}(RT)$, meaning $K_p/K_c = (RT)^{-1}$. By $K_p = K_c(RT)^{\Delta n_g}$, $\Delta n_g$ must be $-1$. For $2SO_2 + O_2 \rightleftharpoons 2SO_3$, $\Delta n_g = 2 - 3 = -1$.