How do I start an ICE table from the following information: BrCl3(g)+ Cl2(l) - BrCl5(g) where Kp=7.8*10^-6 and there is originally 0.215 atm BrCl3, 725g Cl2, 0.115 atm BrCl5 - Can pressures be used as initial concentrations?

Question

How do I start an ICE table from the following information: BrCl3(g)+ Cl2(l) -> BrCl5(g) where Kp=7.8*10^-6 and there is originally 0.215 atm BrCl3, 725g Cl2, 0.115 atm BrCl5 - Can pressures be used as initial concentrations?

DrBob222 · Answer

Kc is uses concns.
Kp uses atmospheres pressure.
.......BrCl3(g) + Cl2(l) ==> BrCl5(g)
I...0.215 atm......725g.......0.115 atm
C......+x............+x..........-x
E....0.215+x.................0.115-x

Kp = pBrCl5/pBrCl3
Note that Cl2 is not included in Kp since it is not a gas.