Practice question

Given: For a reaction with Δ H = 50 kJ/mol and Δ S = 0.1 kJ/K · mol, at what temperature does it become spontaneous? Formula: For spontaneity, Δ G = Δ H - TΔ S < 0. Substitution & Calculation: So, T > Δ H / Δ S = 50 / 0.1 = 500 K. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.