Question

Part A 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 gaseous reaction with the general form aA +B=cC+ DD the K, and Ky expressions are given by CDI K= A "B" (PE) K- Phosgene (carbonyl chloride). COClz, 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(8) = COCI(8) Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 480 °C. At equilibrium, the concentrations were measured and the following results obtained: Gas Partial Pressure (atm) 0.820 CO Cl, COCI 1.24 0.190 The subscript cor 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 since their composition does not change throughout the reaction. The standard state of a pure substance is the pure substance itself, and although the quantity may change the sample remain pure The constant value is incorporated into the value of K and does not need to be accounted for separately What is the equilibrium constant, Kp of this reaction? Express your answer numerically. View Available Hint(s) K = 0.187 Submit Previous Answers Correct Deriving concentrations from data In Part A you were given the equilibrium pressures which could be plugged directly into the formula for K In Part B however, you will be given initial concentrations and only one equilibrium concentration. You must use this data to find all three equilibrium concentrations before you can apply the formula for K Part B The following reaction was performed in a sealed vessel at 784 "C: 11.(g) | I.(g)=2HI(g) Initially, only H, and 1, were present at concentrations of [H3 = 3.55 M and 12) = 2.45M. The equilibrium concentration of l, is 0.0300 M What is the equilibrium constant, K, for the reaction at this temperature? Express your answer numerically,