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Multiple choice - Affect on Standard Gibbs free energy when the reactant or product pressure is increased.

In a gas phase reaction, what is the effect of increasing reactant or product pressure on the standard Gibbs free energy?

a. Delta G increases due to decreased entropy

b. Delta G decreases due to decreased entropy

c. Delta G increases due to increased enthalpy

d. Delta G may either increase or decrease

e. Delta G is unchanged

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