At 25 ^$\circ$C, the base ionization constant for NH₃ is 1.8 * 10^-5. 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, a precipitate of magnesium hydroxide will form. (Assume the volume of the solution is unchanged. The solubility product constant for magnesium hydroxide is 1.5 * 10^-11.)

Question

Quizplus · Accepted Answer

The given information about the base ionization constant of NH₃ and the solubility product constant of magnesium hydroxide are not directly relevant to the question. The question is asking whether or not a precipitate of magnesium hydroxide will form when magnesium chloride and ammonium chloride are mixed in a solution of ammonia. This can be determined by calculating the ion product of magnesium hydroxide and comparing it to the solubility product constant. Since the concentration of hydroxide ions will increase upon mixing, the ion product will exceed the solubility product constant, indicating the formation of a precipitate. Therefore, the statement is true.

At 25 ∘\circ∘ C, the Base Ionization Constant for NH3 Is 1

At 25 ^$\circ$C, the Base Ionization Constant for NH₃ Is 1