Which pair of compounds is soluble in water?

Question

Quizplus · Accepted Answer

LiI and Ca(NOS13)2 are both ionic compounds and therefore dissolve in water through ion-dipole interactions. CuS and Na2S do not dissolve well in water because they are insoluble in room-temperature water due to their low solubility product constants. HgBr2 and HgS are insoluble in water because they are both insoluble inorganic compounds. KSNO and CaCO3 are both slightly soluble in water due to their low solubility product constants.

Which Pair of Compounds Is Soluble in Water