The chemical reaction A+B – C occurs spontaneously. This suggests that for this reaction

The chemical reaction A+B – C occurs spontaneously. This suggests that for this reaction

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Answer

• The free energy change, ΔG, must be negative
  Explanation:
  Spontaneous reaction is one that releases energy to the surrounding and hence the free energy change for such a reaction is usually negative. All spontaneous reactions take place in the direction of a decrease in free energy. Such a reaction may involve decrease or increase in enthalpy, or entropy, but must always involve a a negative free energy change.