Phosphorous trichloride and phosphorous pentachloride equilibrate in the presence of molecular chlorine according to the reaction: PCI,(8) + Cl,(g) → PC1, (g) An equilibrium mixture at 450 K contains P(PCI3) = 0.202 atm and P(C12) = 0.256 atm and P(PCI5) = 3.45 %3D What is the value of Kp at this temperature? 2.99 7.54 66.7 O 1.50 x 10-2 178 x 10-1

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