Which of the following salts is insoluble in water?
Answer Details
The correct answer is AgCI. AgCI is insoluble in water because it is a sparingly soluble salt. When AgCI is added to water, it does not dissolve readily and forms a cloudy mixture. The cloudiness is due to the formation of small insoluble particles of AgCI in water. This is because the attractive forces between Ag+ ions and CI- ions in AgCI are stronger than the attractive forces between these ions and water molecules. In contrast, Pb(NO3)2, Na2CO3, and AgNO3 are soluble salts that dissolve readily in water to form clear solutions.