How does concentration affect free energy?

1 Answer
Sep 25, 2015

DeltaG=DeltaG^@+RTlnQ

Explanation:

Let us look at the expression of free energy: DeltaG=DeltaG^@+RTlnQ

What is the relationship between free energy and concentration?

Well, concentration figures in the expression of free energy inside Q (reaction quotient).

For chemical reactions: "Reactants" -> "Products" the reaction quotient is given as Q=("[Products]"_0)/("[Reactants]"_0)

Any change on the initial concentrations of the reactants or products will change Q and therefore, affecting DeltaG.