Chemistry

Problem

At 450 K the equilibrium reaction PCl5(g) ⇌ PCl3(g) + Cl2(g) is established in a 2.00 L rigid vessel. The measured equilibrium partial pressures are P(PCl5) = 0.250 atm, P(PCl3) = 0.135 atm, and P(Cl2) = 0.135 atm. Calculate the value of

K_p

for the reaction at 450 K.

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