Lexan is a plastic used to make compact discs, eyeglass lenses, and bullet-proof glass. one of the compounds used to make lexan is phosgene (cocly), an extremely poisonous gas. phosgene decomposes by the reaction coch(o) co(g)+cla (9) for which k, 6.8 x 10- at 100°c. if pure phosgene at an initial pressure of 4 8 atm decomposes, calculate the equilibrium pressures of all species partial pressure of coch- partial pressure of co- partial pressure of cla atm atm atm

p[CO] = 1.81*10⁻⁴ atm

p[Cl2] =  1.81*10⁻⁴ atm

p[COCl2]  = 4.8 atm

Explanation:

Given:

Pressure of phosgene, COCl2 = 4.8 atm

Kp = 6.8*10^-9

To determine:

The equilibrium partial pressures of COCl2, Cl2, CO

Calculation:

Set-up an ICE table for the given reaction:

I                 4.8                 0   0

C              -x                    +x   +x

E              (4.8-x)              x     x          

The equilibrium partial pressures are:

p[CO] = x = 1.81*10⁻⁴ atm

p[Cl2] = x = 1.81*10⁻⁴ atm

p[COCl2] = 4.8-x =4.8- 1.81*10⁻⁴ atm = 4.8 atm