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 (COCl2), a poisonous gas.
Phosgene is produced by the reaction
CO(g) 1 Cl2(g) 34 COCl2(g)
for which K 5 4.5 3 109 at 100.8C.
a. Calculate Kp at 100.8C.
b. Equal moles of CO and Cl2 are reacted at 100.8C. If
the total pressure at equilibrium is 5.0 atm, calculate
the equilibrium partial pressures of all the gases.