In this problem you need to draw two pictures of solutions in beakers at different points in time. Time zero (t = 0) will be the hypothetical instant at which the reactants dissolve in the solution (if they dissolve) before they react. Time after mixing (t > 0) will be the time required to allow sufficient interaction of the materials. For now, we assume that insoluble solids have no ions in solution and do not worry about representing the stoichiometric amounts of the dissolved ions. Here is an example: Solid NaCl and solid AgNO3 are added to a beaker containing 250 mL of water.


We are not showing the H2O, and we are representing only the ions and solids in solution. Using the same conditions as the example (adding the solids to H2O), draw pictures of the following:
a. Solid lead(II) nitrate and solid ammonium chloride at t = 0 and t > 0
b. FeS(s) and NaNO3(s) at t = 0 and t > 0
c. Solid lithium iodide and solid sodium carbonate at t = 0 and t > 0