Question

A gas vessel is charged with a mixture of pcl3(g) and cl2(g), which is allowed to equilibrate at 450 k. at equilibrium the partial pressures of the three gases are ppcl3 = 0.132 atm, pcl2 = 0.190 atm, and ppcl5 = 1.67 atm. (a) what is the value of kp at this temperature?

Answer 1

Answer is: Kp = 66,586.
Chemical reaction:  PCl₃(g) + Cl₂(g)  ⇔ PCl₅(g).
Kp - equilibrium constants expressed in terms of partial pressures of gases.
Kp = p(PCl₅) ÷ p(PCl₃) · p(Cl₂). p-partial pressure.
Kp = 1,67 atm ÷ 0,132 atm · 0,190 atm
Kp = 66, 586 1/atm. Favors product.