I need to solve a problem but I can't seem to figure out how to move from the given values to Kp. Here's the question:
2SO2(g) + O2(g) ⇌ 2SO3(g)
ΔrH° = −200 kJ.mol-1 and ΔrS° = −187 J.mol-1.K-1 at 25 °C.
Calculate the temperature at which Kp = 1.
I suppose I'm supposed to calculate ΔG first, and then Kc, but then I'm pretty much stuck.