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

Question

Phosgene (carbonyl chloride), , 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: Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 471 . At equilibrium, the concentrations were measured and the following results obtained: Gas Partial Pressure () 0.800 for CO 1.24 for Cl2 0.160 for COCl2 What is the equilibrium constant, , of this reaction? Express your answer numerically.

Explanation / Answer

CO + Cl2 --> COCl2 Kp = pCOCl2/(pCO xpCl2) = 0.16/(0.8x1.24) = 0.1613 atm-1

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