PROBLEMS 1. Making a judgment. If the ĪG°' of the reaction Sā P is -50 kJ molā»Ā¹ (-12 kcal molā»Ā¹), the reaction will: (a) never reach equilibrium. (b) proceed spontaneously from left to right. (c) proceed rapidly because of the large negative ĪG°'. (d) never reach equilibrium because of the large negative ĪG°'.