Suppose that, in a given reaction, the enthalpy (H) increases by 10 units, and the disorder (TS) increases by 12 units. Would this reaction be considered spontaneous?
A)yes
B)no

Question

Quizplus · Accepted Answer

A reaction is considered spontaneous if the change in Gibbs free energy (ΔG) is negative, where ΔG = ΔH - TΔS. In this case, ΔH = +10 and ΔS = +12, so ΔG = 10 - T(12). If the temperature is high enough, the positive ΔS term will dominate and make ΔG negative, resulting in a spontaneous reaction. Therefore, the answer is A (yes, it is considered spontaneous).

Suppose That, in a Given Reaction, the Enthalpy (H) Increases