MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

For a reaction to be spontaneous, the change in Gibbs free energy must be negative, i.e., G Using the Gibbs free energy equation: G = H - T S Substituting the given values ( H = -50000 J and S = -100 J/K): -50000 - T(-100) -50000 + 100T 100T T The reaction is spontaneous at temperatures below 500 K. Among the given options, only 450 K satisfies this condition. Answer: 450 K