MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryThermodynamics and ThermochemistryRelationship Between ΔH and ΔU
In a reaction P + Q → R + S, there is no change in entropy. Enthalpy change for the reaction (∆H) is 12 kJ mol–1. Under what conditions, reaction will have negative value of free energy change?
A.If ∆H is positive
B.If ∆H is negative✓ Correct
C.If ∆H is 24 kJ mol–1
D.If temperature of reaction is high.
Explanation
∆G = ∆H – T∆S, ∆S = 0 or T∆S = 0 ∆G = ∆H Standard Enthalpy Change ΔH°
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