🤓 Based on our data, we think this question is relevant for Professor Keyes' class at BU.
Phosphorus pentachloride decomposes according to the chemical equation
PCI5(g) ⇌ PCI3(g) + Cl2(g) Kc = 1.80 at 250°C
A 0.250 mol sample of PCI5(g) is injected into an empty 2.90 L reaction vessel held at 250°C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.