IS THERE A RELATIONSHIP BETWEEN FREE ENERGY OF REACTION AND
THE STANDARD FREE ENERGY OF A REACTION?
The relationship
between the free energy of reaction at any moment in time (DG) and the standard-state free energy of reaction (DGo) is described by the following equation.
DG = DGo + RT ln Q
where
·R –
ideal gas constant (J/mol-K)
·T – temperature (K)
·Q – reaction quotient at that moment in
time
As we have seen, the driving force behind a chemical
reaction is zero (DG = 0) when the reaction is
at equilibrium (Q = K). [2]
