Which of the following analytical observations concerning activation energy () and its role in chemi — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

A is true; a catalyst provides a uniform alternate path, dropping both $E_{a(f)}$ and $E_{a(b)}$ equally without altering $\Delta H$. B is true because $k = A e^{-0/RT} = A$, detaching $k$ from $T$. C is true because $\Delta H = E_{a(f)} - E_{a(b)}$; for an endothermic process ($\Delta H > 0$), $E_{a(f)}$ must exceed $\Delta H$ since $E_{a(b)}$ is positive. D is false; Arrhenius $E_a$ is treated as a temperature-independent constant.