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Predict the spontaneity of a forward (or...

Predict the spontaneity of a forward (or) a reverse reaction based on `Delta`G of a reversible reaction.

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The value of `K_(c)` is directly related to the Gibbs free energy change `(DeltaG)` of the reaction.
1. If `DeltaG` = -ve, then the reaction is spontaneous, and proceeds in the forward reaction.
2. If `DeltaG` = +ve, then the reaction is non-spontaneous in the forward direction. The reverse reaction will be spontaneous, and thus proceed towards the reactants' side.
3. If `DeltaG` = 0, then the reaction is at equilibrium. No net change takes place.
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