So 2.33 times r t log q, where r is simply the gas constant, t is the temperature in Kelvin and q is the reaction quotient. And that tells us the ratio of the concentration of products to the reactants. Now, what exactly is the meaning of delta g? Well, delta g tells us the amount of free energy that is produced or used up when a chemical reaction takes place under certain conditions. So if a chemical reaction takes place and it releases gets free energy, that reaction will have a negative delta g value. And such a reaction is said to be spontaneous exergonic.