What is ΔG° at 555°C for a reaction with ΔH° = −152 kJ and ΔS° = 79.1 J/K?

Question

Quizplus · Accepted Answer

To calculate ΔG° (Gibbs free energy change) at a specific temperature, you can use the formula ΔG° = ΔH° - TΔS°, where ΔH° is the change in enthalpy, T is the temperature in Kelvin, and ΔS° is the change in entropy. First, convert the temperature from °C to K: 555°C + 273.15 = 828.15 K. Then, plug the values into the formula: ΔG° = -152,000 J - (828.15 K)(79.1 J/K) = -152,000 J - 65,500 J = -217,500 J, which is approximately -217 kJ.

What Is ΔG° at 555°C for a Reaction with ΔH°