Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in m

Question

Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: Co+Cl2=COCl2. Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 475 degrees celcius. At equilibrium, the concentrations were measured and the following results obtained:.
gas partial pressure
CO .710
Cl2 1.20
COCl2 1.20
What is the equilibrium constant, Kp, of this reaction?

Explanation / Answer

kp= (P COCl2) / (P CO) (P Cl2) kp= (1.20) / (0.710)(1.20) kp= 1.40 (kp doesn't have any units) since the partial pressure they gave you were in equilibrium, all you had to do was kp = products / reactants

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