Which pair of compounds is soluble in water? A) Hg₂Cl₂ and Hg₂Br₂ B) NiS and Li₂S C) NH 4 I and Ni(NO₃)₂ D) LiNO₃ and CuCO₃

Question

Quizplus · Accepted Answer

NH4I and Ni(NO3)2 are both ionic compounds that dissolve in water due to their ability to form ions in solution and interact with the polar water molecules through ion-dipole interactions. The other choices either contain insoluble compounds (such as HgS or CuCO3) or do not contain any ionic compounds (such as NiS and Li2S).

Which Pair of Compounds Is Soluble in Water