A reaction has a standard free energy change of -18.50 kJ/mol. Calculate the equilibrium constant for the reaction at 25C.

I am using the equation deltaG= -2.3RTlog(Keq) with R and G in Joules and T in Kelvin, yet I cannot seem to get the correct answer. Any thoughts on what I might be doing wrong?

Question

A reaction has a standard free energy change of -18.50 kJ/mol.  Calculate the equilibrium constant for the reaction at 25C.  

I am using the equation deltaG= -2.3RTlog(Keq) with R and G in Joules and T in Kelvin, yet I cannot seem to get the correct answer.  Any thoughts on what I might be doing wrong?

anonymous · Answer

So R=8.314 and G=18500 and T=298