16 marks Unit 4: Chemical Systems and Equilibrium: Background: We have studied chemical equilibria. Equilibria can be shifted in one direction or another by adjusting conditions of the reaction. Task: You will be given an equilibrium system to analyze. For this system you will complete the tasks below. Analysis Table B: Complete the table below, based on the equilibrium system provided. A link to your system can be found here Iron thiocyanate System Fe+3 + SCN FeSCN+2+ heat pale yellow red Task Response Write an equilibrium expression for your system (1). For each stress, determine the Stress effect it will have on the system in terms of shift and K (the equilibrium constant) (3). Add KSCN(aq) Shift (left or right) Effect on K add Na HPO (aq) where HPO, forms a precipitate with Fe" Decrease temperature if the system is placed in a heat source, then what colour should the mixture become? Briefly explain why (2) Fe+3{pale yellow} + SCN FeSCN+2 {red} + heat 1 KOCH 1080) H2HPO4 NOTES: -the HPO, ion forms a complex with the Fetion