For a given reaction, ΔH = -19.9 kJ/mol and ΔS = -55.5 J/K-mol. The reaction will have ΔG = 0 at __________ K. Assume that ΔH and ΔS do not vary with temperature.

Question

Quizplus · Accepted Answer

To find the temperature at which ΔG = 0, use the equation ΔG = ΔH - TΔS. Setting ΔG to 0 gives T = ΔH/ΔS. Convert ΔS to kJ by dividing by 1000, so ΔS = -0.0555 kJ/K-mol. Then, T = -19.9 kJ/mol / -0.0555 kJ/K-mol = 359 K.

For a Given Reaction, ΔH = -19