The standard reaction Gibbs energy for a chemical reaction at an absolute temperature T is given by ΔrG° = A – BT Where A and B are non-zero constants. Which of the following is TRUE about this reaction?

Engineering

Chemistry

Gibbs Free Energy Entropy and Spontaneity

Question

The standard reaction Gibbs energy for a chemical reaction at an absolute temperature T is given by

Δ_rG° = A – BT

Where A and B are non-zero constants. Which of the following is TRUE about this reaction?

Exothermic if A > 0 and B < 0

Endothermic if A < 0 and B > 0

Endothermic if A > 0

Exothermic if B < 0

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ΔG° = ΔH° – TΔS°

ΔG° = A – BT

In endothermic reaction ΔH = +ve. Hence, A = +ve