* Solubility Rules: Lead nitrate is a soluble salt, according to the general solubility rules. Most nitrates are soluble in water.
* Lead Sulfate is Insoluble: Lead sulfate is an exception to the general rule. It is considered an insoluble salt in water.
Key Concept: Solubility is a measure of how much of a substance can dissolve in a given amount of solvent at a specific temperature.
In summary: Lead nitrate readily dissolves in water, while lead sulfate forms a precipitate (solid that doesn't dissolve) in water.
