Phosphorus trichloride gas and chlorine gas react to form
phosphorus pentachloride gas: PCl31g2 + Cl21g2 Δ
PCl51g2. A 7.5-L gas vessel is charged with a mixture of
PCl31g2 and Cl21g2, which is allowed to equilibrate at 450
K. At equilibrium the partial pressures of the three gases are
PPCl3 = 0.124 atm, PCl2 = 0.157 atm, and PPCl5 = 1.30 atm.
(a) What is the value of Kp at this temperature?
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