E5 Le Chatelier's Principle (iii) Explain your observation in terms of the [Cl] in the two solutions above, and in terms of the equilibrium equation NaCl(s) Na (aq) + CI+ (aq). (b) Saturated Barium Chromate (1) Write a balanced equation for the reaction that occurs when K2Cr04 and BaCl2 solutions are mixed (ii) Write a balanced equation describing the equilibrium that is established upon mixing K2CrO4 and BaCl2 solutions. (iii) Explain the changes observed when this equilibrium (above) is treated with 6 M HCI. 4. Application of the law of chemical equilibrium to solubility equilibria Relative amounts of precipitate, if any Solutions mixed (1) CaCl2(aq) + H2C2O4(aq) (2) CaCl2(aq) +K2C2O4(aq) (3) Results of (1) + 6 M HCI (4) Results 3) + 6 MNH (5) CaCl2(aq) + 6 M NH3 + Ca2+ + C2042 = CaC2O4(s) 3 H3O+ + NH3 + NH4+ + H2O 21 4 HC204 +H30H2C204+H2O + H2O -10