Read the Assertion and Reason below and choose the correct option. — Electrochemistry Chemistry Question

💡 Solution & Explanation

An electrochemical (galvanic) cell strictly requires a spontaneous redox reaction to generate electrical energy, so Statement I is true. Statement II is the fundamental thermodynamic definition of spontaneity (ΔG < 0) and is also true. However, defining spontaneity does not explain the physical mechanism of *setting up* a cell (which relies on physically separating the half-reactions to force electrons through an external circuit). Therefore, correct answer is B.