1. The equilibrium constant , Ko, is 4. A 0.160 mol sample of PCI , (g) is put in 4.51 x10 --sat 450 .C for the reaction a rigid 1.0 L container at an unknown represented below temperature . After a period of time , the N2 (g) + 3H 2 (8) 2NH 3 (8) system comes to equilibrium . A graph Suppose you start out with only showing the concentration of PCl s (8) reactants in a rigid container . The as a function of time has been plotted initial partial pressure of N, is 1.0 atm below and that of H, is 1.4 atm . What are the PCl s (g) PCI 3 (8) + Cl2 (8) partial pressures of each species when a. What was the concentration of PCI 5 the system reaches equilibrium ? when the system established (P NH3 = 0.01 1 atm, P 2 = 1.0 atm, P,, = 1.4 atm) equilibrium ? 2. Suppose you start out with only reactants in a rigid container . If the initial concentration of SO , Cl 2 (8) is (moles / L) 0.543 M and 43.6 % of this initial [PCI 5] concentration remains when the system has reached equilibrium , what are the equilibrium concentrations of Concentration each gas in the system ? What is the 00.0930.160 value of K ? SO 2 Cl 2 decomposes time (s) according to the following equation SO , Cl, (8) SO 2(8) + Cl2 (8) b. Find the concentrations of PCI , and ([SO ,Cl, ] = 0.237 M, [SO,]=[CI,]=0.306 M, K. = 0.395) Cl 2 at equilibrium . Sketch , on the 3. At a particular temperature , K. = 0.25 graph above how the concentrations for the reaction N, 0 4 2NO 2. of PCI , and Cl 2 a. A flask containing only N 20 at an change over time . initial pressure of 4.5 atm is C. Calculate the value of the allowed to reach equilibrium constant K for the Calculate the equilibrium equilibrium partial of the gases reaction at this temperature . (0.048) pressures [P NO2 = 1.0 atm, PN204 = 4.0 atm ) d. Instead , the container initially b. A flask containing only NO , at an contained 0.200 mol PCI , and 0.250 initial pressure of 9.0 atm is mol Cl,. What are the equilibrium allowed to reach equilibrium concentrations of all species ? What Calculate the equilibrium partial is K ? pressures of the gases ([PCI, ] = 0.14 M, [PCI, ] = 0.060 M, (P NO2 = 1.0 atm, P N204 = 4.0 atm ) Cl, ] = 0.1 1 M, 0.048)