AIIMS 2019 Chemistry Gibbs Free Energy MCQ Question
In conversion of lime-stone to lime,
he values of and are and respectively at and . Assuming that and do not change with temperature, temperature above which conversion of lime-stone to lime will be spontaneous is
Correct Answer
Detailed Explanation
In the context of the Gibbs free energy equation, ΔG° = ΔH° - TΔS°, a spontaneous reaction occurs when ΔG° < 0. The derived condition T > ΔH°/ΔS° indicates that for the reaction to be spontaneous, the temperature must exceed 1118 K, which is a critical threshold. Since all provided options (A, B, C, D) are marked as N/A, it suggests that none of the options provide relevant information or alternative scenarios, reinforcing that option A is the only viable choice in this context. Understanding this relationship between enthalpy (ΔH°), entropy (ΔS°), and temperature (T) is essential for predicting reaction spontaneity.
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