Chemistry Equilibrium Problem

Posted on 2015-11-13 06:34:00 in Chemistry by MIKKEY

Please Read My Response Below the Question:

A container at 83 C initially contains AB (g) in equilibrium with AB (l):

AB (l) ? AB (g)

A catalyst (of negligible volume) is added to the container such that AB (g) quickly decomposes and reaches equilibrium at 83 C according to the reaction:

AB(g) ? A(g) + B(g) Kp = 2.3 atm at 83 C

If the initial total pressure of the container (with AB only) is 0.359 atm, what is the total pressure (in atm) of the container (still containing liquid AB) at equilibrium? Assume A and B do not condense and are insoluble in liquid AB.

Alright, so I am extremely tempted to plug things into an ICE table, but....the first part of the question lists an AB (I) and AB (g) in equilibrium. How is that helpful? The liquid contributes nothing to the pressure/Kp, am I right? So if I find the pressure of AB(g) at Equilibrium from the second equation, doesn't that equate to the pressure it had with the liquid? In summary, how do things equate here, what assumptions should I take?

---

Answer Comment

No Answers Posted Yet.