A positive value of ΔG°_f for a solid compound at 25°C means the

Question

Quizplus · Accepted Answer

A positive value of ΔG°_f indicates that the process of forming the compound from the stable elements is nonspontaneous, meaning that energy input is required for the reaction to occur. Thus, the compound cannot exist at 25°C and 1 atm without the addition of energy. Choice A is incorrect because it does not account for the possibility that the compound could exist under different conditions. Choice B is incorrect because the physical state of the compound is not determined by ΔG°_f. Choice C is incorrect because the sign of ΔG°_f does not necessarily indicate whether the process is exothermic or endothermic, only whether it is spontaneous or nonspontaneous.

A Positive Value of ΔG°f for a Solid Compound at 25°C

A Positive Value of ΔG°_f for a Solid Compound at 25°C