Which of the following pairs of aqueous solutions will form a precipitate when mixed? A) LiOH + Na₂S B) (NH₄)₂SO₄ + LiCl C) Sr(C₂H₃O₂)₂ + Na₂SO₄ D) KNO₃+ NaOH E) None of the above solution pairs will produce a precipitate.

Question

Quizplus · Accepted Answer

We can use solubility rules to determine which pairs of solutions will result in a precipitate. According to the rules, if we mix a solution containing a sulfate ion with a solution containing a calcium, strontium, or barium ion, a precipitate will form. This eliminates options A, B, and D. Option C contains a solution of strontium sulfide and a solution of sodium sulfate, which fit the criteria for a precipitate to form. Option E is not the correct choice because at least one of the options will result in a precipitate.

Which of the Following Pairs of Aqueous Solutions Will Form