Question

For the following reaction, Kc = 255 at 1000K. CO(g)+Cl2(g) <——>COCl2(g)

If a reaction mixture initially contains a CO concentration of 0.1510 and a Cl2 concentration of 1.178 at 1000K. What is the equilibrium concentration of CO at 1000K

I need help with all three below

Equilibrium Concentration of CO at 1000K

Equilibrium Concentration of Cl2 at 1000K

Equilibrium Concentration of COCl2 at 1000K

Answer 1

For given reaction K _c = 255

Let equilibrium concentration of CO = 0.151- X -------(1)

Let equilibrium Concentration of Cl ₂ = 1.178-X. --------(2)

Let equilibrium Concentration of COCl ₂ = 2X ---------(3)

As per euilibrium constant equation,

Kc= [ CO]*[ Cl ₂]/ [COCl ₂]

255= (0.151-X)*(1.178-X)/ (2X)

510X= (0.178- 1.329X+ X ²)

=> X ² - 511.329X + 0.178= 0

On solving we get X=

From X value, we can calculate equilibrium concentration of reactants and products by substituting the value if X in eq (1), (2) and (3).