Phosgene is a gas first synthesized by the British chemist, John Davy, in 1812. It has a…

Phosgene is a gas first synthesized by the British chemist, John Davy, in 1812. It has a nauseating odor resembling green corn or hay and attacks the lungs. It was used as a poison gas in WWI. Phosgene dissociates according to the reaction

A vessel is filled with Phosgene, COCl2 to a pressure of 0.014172MPa The temperature is 298K. The gas does not dissociate at this temperature. The vessel and gas is then raised to a temperature of 686.65K at which point the pressure of the gas in the vessel is 0.045275MPa.

(a) Has any of the gas dissociated at 686.65K?

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(b) What is the equilibrium constant, KP at 686.65K?

 

 

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