At 450ºC, the equilibrium constant Kp for the reaction PCl5(g)  PCl3(g) + Cl2(g) is 2.33. Sufficient PCl5 is put into a reaction vessel to give an initial pressure of 3.61 atm at 450ºC. Calculate the pressure of PCl5 after the system has reached equilibrium.   * There is an equilibrium sign in between PCl5 and PCl3

Q: atm

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