[Marcus Soutlo]

If 1.00 mol of iodine and 0.50 mol of chlorine are initially placed into a 2.00 L reaction vessel at 25 degrees celsius, find the concentrations of all entities at equilibrium 


My Work:
I2 + Cl2 ==> 2ICl

Keq = (ICl)^2/(I2)(Cl2) 

Initial concns:
(I2) = 1.00 mol/2.00 L =??
(Cl2) = 0.50 mol/2.00 L = ??
(ICl) = 0

Change in concn:
(ICl) = 2x
(I2) = -x
(Cl2) = -x

Equilibrium concns:
(ICl) = 0 + 2x = 2x
(I2) = (1.00/2.00) - x =
(Cl2) = 0.50/2.00) - x =

Plug into Keq and solve for x, then for each entity.

How would I do this last step?

[Rabn]

you obviously need to invest in a calculator. here is a free on-line calculator that works well http://www.calculator.org/index.html