Predicting a precipitate

Get the most by viewing this topic in your current grade. Pick your course now.

?
Intros
Lessons
  1. Predicting if a solution will form a precipitate.
  2. Recalling Ksp.
  3. The ionic product Q (with worked example).
  4. Predicting precipitates using Ksp and Q.
?
Examples
Lessons
  1. Use the solubility product expression to predict a precipitate.1
    1. A solution was made by combining 75 mL of 0.2M Mg2+(aq) and 110 mL of 0.08M OH-(aq). Use these values and the solubility product expression to predict whether a precipitate of Mg(OH)2 will form in the resultant mixture.
    2. A solution was made by combining 20 mL of 0.01M Fe3+(aq) and 25 mL of 0.01M OH-(aq). Use these values and the solubility product expression to predict whether a precipitate of Fe(OH)3 will form in the resultant mixture.
    3. A solution was made combining 50 mL of 0.003M Ca2+(aq) and 40 mL of 0.008M SO42-(aq). Use these values and the solubility product expression to predict whether a precipitate of CaSO4 will form in the resultant mixture.

      1 Source for Ksp solubility constant data at 250C: http://www4.ncsu.edu/~franzen/public_html/CH201/data/Solubility_Product_Constants.pdf