How does concentration affect free energy?

1 Answer
Dr. Hayek
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#.

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