Which of the following mathematical statements regarding the relationship between and is/are univers — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

$K_p$ and $K_c$ are related by $K_p = K_c(RT)^{\Delta n_g}$ (A is correct). Taking the log of both sides yields $\log(K_p/K_c) = \Delta n_g \log(RT)$ (B is correct). For the $PCl_5$ dissociation, $\Delta n_g = 1$. Thus, $K_p = K_c(RT)^1$. If $RT > 1$, then $K_p > K_c$ (C is correct). The units of $K_p$ and $K_c$ depend directly on $\Delta n_g$ and are only unitless when $\Delta n_g = 0$ (D is false).