Answer: The Gibbs free energy change of the reaction is 2.832 kJ.
Step-by-step explanation:
The relationship between Gibbs free energy change and reaction quotient of the reaction is:

where,
= Gibbs free energy change
R = Gas constant = 8.314 J/mol.K
T = temperature =

= reaction quotient =
We are given:

Putting values in above equation, we get:

(Conversion factor: 1 kJ = 1000 J)
Hence, the Gibbs free energy change of the reaction is 2.832 kJ.