Question

1. When 25.0 mL of a 2.11×10^-4 M magnesium bromide solution is combined with 15.0 mL of a 9.37×10^-4 M ammonium fluoride solution does a precipitate form?  (yes or no)

For these conditions the Reaction Quotient, Q, is equal to .

2. Solid potassium hydroxide is slowly added to 175 mL of a 0.0511 M calcium acetatesolution. The concentration of hydroxide ion required to just initiate precipitation is  M.

3. Solid aluminum nitrate is slowly added to 50.0 mL of a 0.0350 M sodium hydroxidesolution. The concentration of aluminum ion required to just initiate precipitation is  M.

4. Solid potassium hydroxide is slowly added to 175 mL of a 0.311 M calcium nitrite solution until the concentration of hydroxide ion is 0.0302 M. The percent of calcium ion remaining in solution is  %.

5. Solid aluminum bromide is slowly added to 50.0 mL of a 0.150 M sodium hydroxidesolution until the concentration of aluminum ion is 0.0694 M. The percent of hydroxide ion remaining in solution is  %.

Answer 1