Which of the following is a precipitation reaction? A) Zn(s) + 2 AgNO₃(aq) → 2 Ag(s) + Zn(NO₃)₂(aq) B) KCl(aq) + LiI(aq) → KI(aq) + LiCl(aq) C) 2 NaI(aq) + Hg₂(NO₃)₂(aq) → Hg₂I₂(s) + 2 NaNO₃(aq) D) HCl(aq) + KOH(aq) → KCl(aq) + H₂O(l) E) None of the above is a precipitation reaction.

Question

Quizplus · Accepted Answer

A precipitation reaction is a type of reaction where two aqueous solutions react to form an insoluble solid, which is called a precipitate. In option C, 2 NaI(aq) reacts with Hg₂(NO₃)₂(aq) to form Hg₂I₂(s), which is insoluble in water and forms a precipitate. Therefore, option C is the precipitation reaction.

Which of the Following Is a Precipitation Reaction