# How do you calculate Gibbs free energy from equilibrium constant?

##### 1 Answer
Nov 24, 2017

I think you mean how to calculate change in Gibbs free energy.

$\Delta {G}^{\circ} = - R T \ln {K}_{\text{eq}}$

Where

• $\Delta {G}^{\circ}$ - Standard change in Gibbs free energy
• $T$ - Temperature in Kelvin
• ${K}_{\text{eq}}$ - Equilibrium constant