1. At 25 °C, the base ionization constant for NH3 is 1.8 x 10-5. a. Determine the pH of a solution prepared by adding 0.0500 mol of solid ammonium
chloride to 100 mL of 0.150 M ammonia.
b. Determine the percentage ionization of a 0.150 M solution of ammonia at 25 °C.
c. If 0.0800 mole of solid magnesium chloride is dissolved in a solution prepared by
adding 0.0500 mol of solid ammonium chloride to 100 mL of 0.150 M ammonia, will a
precipitate of magnesium hydroxide form? (Assume the volume of the solution is
unchanged. The solubility product constant for magnesium hydroxide is 1.5x10-11.)