Consider the figure that shows ΔG° for a chemical process plotted against absolute temperature. Which one of the following is an incorrect conclusion, based on the information in the diagram?

Question

Consider the figure that shows ΔG° for a chemical process plotted against absolute temperature.  Which one of the following is an incorrect conclusion, based on the information in the diagram?

Quizplus · Accepted Answer

The diagram shows that as temperature increases, ΔG° becomes more negative and the reaction becomes more spontaneous. Therefore, ΔH° must be positive and ΔS° must be positive (since the reaction becomes more disordered at higher temperatures). The diagram does not provide information about whether there exists a certain temperature at which ΔH° = TΔS°. However, the slope of the line in the diagram indicates that ΔS° increases with temperature while ΔH° remains constant, which is consistent with the relationship ΔG° = ΔH° - TΔS°.

Consider the Figure That Shows ΔG° for a Chemical Process