1. Write the balanced chemical equation, the equilibrium constant expression, and give numerical values for the equilibrium constant for each of the following: (a) the complexation of oxalate ion with Fe^3+ to form Fe(C2O4) (K = 1.0 x 10^20) (b) the reaction of acetic acid with NH3 to produce water and ammonium acetate 2. When BaCl 2. H2O (s) is dried in an oven, it loses gaseous water. (a) (a) Write the equilibrium constant for this reaction. Calculate the vapor pressure of gaseous H2O above BaCl2. H2O at 298 Degree K. (b) (b) Assuming that Delta H and Delta S are not temperature dependent (a poor assumption), estimate the temperature at which the vapor pressure of H2O above BaCl2.H2O (s) well be I atmosphere 3. Calculate the molar solubility of pbCl2 in (a)(a) pure water (b) (b) 0.15 M NaCl (c)(c) 0.10 M pb (NO3)2 4 Could you separate calcium ion completely (99.9% separation) from magnesium ion, using hydroxide ion as the precipitating agent, where the concentrations of the metal ions are 0.100 M and 0.200 m respectively?