[Olympiad] For a reaction at 298 K, ΔH = -50.0 kJ and ΔS = -100 J/K. Calculate the Gibbs free energy change (ΔG) and determine if the reaction is spontaneous.
- -20.2 kJ, Spontaneous
- -20.2 kJ, Spontaneous
- +20.2 kJ, Non-spontaneous
- -80.0 kJ, Spontaneous
📝 Detailed explanation
ΔG = ΔH - TΔS.ΔG = -50,000 J - (298 K * -100 J/K) = -50,000 + 29,800 = -20,200 J = -20.2 kJ.
Since ΔG < 0, the reaction is spontaneous.