Among the following the reaction for which δ H = δ E, is — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

We know that δ H = δ E + δ n_g * R * T. For δ H = δ E, δ n_g must be 0. Let's check δ n_g for each reaction: (a) δ n_g = (1 + 1) - 1 = 1; (b) δ n_g = 2 - (1 + 1) = 0; (c) δ n_g = (2 + 3) - 3 = 2; (d) δ n_g = 1 - (1 + 1) = -1. Thus, reaction (b) has δ n_g = 0 and δ H = δ E.