NEET Chemistry Gibbs Free Energy Assertion Reason Question
Assertion (A): A reaction with a positive enthalpy change (ΔH) and a positive entropy change (ΔS) can be spontaneous at high temperatures.
Reason (R): Gibbs free energy (ΔG) becomes negative at high temperatures when both ΔH and ΔS are positive.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
A is false.
Correct Answer
Detailed Explanation
From the NCERT context, a reaction with positive ΔH and ΔS can be spontaneous at high temperatures because ΔG = ΔH - TΔS can become negative if TΔS exceeds ΔH.
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