Ke for the reaction n2o2no2 in chloroform at 291 k is 1.14. calculate the free energy change of the reaction when the concentration of two gases are 0.5 mol/dm

Ke for the Reaction N2O2NO2 in chloroform at 291 K is 1.14. Calculate the free energy change of the reaction when the concentration of two gases are 0.5 mol/dm each at the same temperature (R = 0.0821 lit atm tmol) (give answer upto two decimal places)