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The Gibbs free energy is positive when a change in enthalpy and change in entropy are positive at ____________

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in Chemistry – Class 11 by (148k points)
The Gibbs free energy is positive when a change in enthalpy and change in entropy are positive at ____________

(a) high temperatures

(b) low temperature

(c) all temperatures

(d) only at 0 Kelvin

This question was posed to me in homework.

This interesting question is from Gibbs Energy Change and Equilibrium topic in portion Thermodynamics of Chemistry – Class 11

1 Answer

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Right choice is (b) low temperature

Explanation: When a change in entropy and the change in enthalpy are positive the Gibbs free energy is positive at low temperatures and negative at high temperatures. We can obtain this through the equation ΔG = ΔH – TΔS.

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