I need to calculate the value of Kp at 25 degrees celsius using the delta Go value.

Delta Go = -29.10kJ

I know that Delta Go = -RT lnK and that R=8.314e-3kJ/K mol

-delta Go / RT

I did -29.10 / 8.314e-3 X 298K and -11.74 but this was wrong. I am stuck. What did I do wrong?