We are given the equation to use which is: ΔG = ΔH - TΔS
We are also given that: ΔG = 173.3 kJ T = 303 degrees kelvin ΔH = 180.7 kJ
Substitute with these givens in the above equation to get ΔS as follows: ΔG = ΔH - TΔS 173.3 = 180.7 - 303ΔS 303ΔS = 180.7 - 173.3 303ΔS = 7.4 ΔS = 7.4 / 303 = 0.02442 kJ/K which is equivalent to 24.42 J/k
Based on the above calculations, the correct choice is: D. 24.42 J/K