The equilibrium constant, K, of a reaction at a particular temperature is determ

Question

The equilibrium constant, K, of a reaction at a particular temperature is determined by the concentrations or pressures of the reactants and products at equilibrium. For a gas eous reaction with the general from aA + bB cC + dD the Kc and Kp expressions are given by Kc = [C]c[D]d / [A]a[B]b Kp = (PC)c(PD)d / (PA)a(PB)b The subscript c or p indicates whether K is expressed in terms of concentrations or pressures. Equilibrium-constant expressions do not include a term for any pure solids or liquids that may be involved in the reaction. 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(g) + Cl2(g) COCl2(g) Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 463 degree C. At equilibrium, the concentrations were measured and the following results obtained: Gas Partial Pressure (atm) CO 0.820 Cl2 1.11 COCl2 0.180 What is the equilibrium constant, Kp, of this reaction? Express your answer numerically.

Explanation / Answer

0.1977

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