Exemplar Problems

Problem 18 : A reaction has an equilibrium constant Kp = 0.25 at a certain temperature. Calculate the value of ∆G° for this reaction at the same temperature. (R = 8.314 J/(mol•K))
Solution :

The relationship between ∆G° and Kp is given by the equation: ∆G° = -RT ln(Kp)

To calculate ∆G°, you need to know the temperature (T) at which the equilibrium constant Kp is given.