A spontaneous reaction must have a negative change in free energy.
The change in free energy can be used to decide the spontaneity of a chemical reaction. We must recall that a spontaneous reaction must have a negative change in free energy. A reaction at equilibrium has a change in free energy value of zero. A reaction that is not spontaneous have a positive change in free energy.
Since the numerical values are missing in the question, we can not compute the numerical change in free energy.
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