Gibbs Free Energy and K

[Mackenzie Lay 2H]

How does a change in Gibbs free energy connect with the equilibrium constant for a reaction?

[Shaniya Kerns 4D]

The Gibbs free energy equation ΔG=−RTln(K) is a quantity that is used to measure the maximum amount of work done in a thermodynamic system when the temperature and pressure are kept constant. If ΔG<0, the reaction is spontaneous in the forward direction reaction to products. If ΔG>0, the reaction is non-spontaneous in the forward direction. At equilibrium, ΔG=0. The equilibrium constant K depends on temperature. Changes in temperature alter the value of K, which in turn affects ΔG for the reaction.