NEET Chemistry Gibbs Free Energy MCQ Question
Which of the following statements about Gibbs Free Energy is correct?
A negative Gibbs Free Energy change indicates that a reaction is spontaneous at all temperatures.
A positive Gibbs Free Energy change suggests that a reaction can occur spontaneously at high temperatures only.
A reaction with both positive enthalpy and positive entropy changes is always spontaneous at low temperatures.
The spontaneity of a reaction can depend on temperature and the signs of enthalpy and entropy changes.
Correct Answer
Detailed Explanation
The spontaneity of a reaction is influenced by the temperature and the signs of enthalpy (ΔrH°) and entropy (ΔrS°) changes, as indicated in the Gibbs Free Energy relationships. A negative Gibbs Free Energy change (ΔrG°) indicates spontaneity, but this can vary with temperature.
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