In: Chemistry
Pure phosgene gas (COCl2), 0.0340 mol, was placed in a 1.30-L container. t was heated t o730.0 K, and at equilibrium, the pressure of CO was found to be 0.513 atm. Calculate the equilibrium constant Kp for the reaaction:
CO(g) + Cl2(g) >< COCl2(g)
PV = nRT
P = 0.034 x0.0821 x730/ 1.3
= 1.567atm (initial)
CO + Cl2 <-------------------> COCl2
1.567 1 0 initial
1.567 -x 1-x x equilibrium
but at equilibirum
pCO = 1.567 -x= 0.513
x = 1.054
pCOCl2 = x = 1.054
pCl2 = 1-x = 0.054
Kp =pCOCl2 /pCl2 xpCO
kp= 1.054/0.054x0.513
Kp = 38.05 atm^-1