Which of the following pairs of aqueous solutions will form a precipitate when mixed? A) KOH + Li₂S B) (NH₄)₂SO₄ + LiCl C) Sr(C₂H₃O₂)₂ + Li₂SO₄ D) KNO₃+ LiOH E) None of the above solution pairs will produce a precipitate.

Question

Quizplus · Accepted Answer

When strontium chloride (SrCl2) is mixed with lithium sulfide (Li2S), strontium sulfide (SrS) is formed, which is insoluble in water and will precipitate out of the solution. Therefore, choice C is the only pair of solutions that will form a precipitate. Choice A will form aqueous solutions of KOH and LiOH, choice B will form aqueous solutions of NH4+ and Cl-, and choice D will form aqueous solutions of KNO3 and LiOH, none of which will produce a precipitate when mixed.

Which of the Following Pairs of Aqueous Solutions Will Form