why deliquescent salt insoluble oxide in cold water but soluble in hot water give reason
Answers
There are many exception in the solubility of lead salts like:
Lead sulfate is insoluble in cold water whereas most of the sulfates are soluble in cold water.
Lead chloride is also insoluble in cold water but is soluble in hot water. Why?
Carbonates are generally insoluble in water but they dissolve in dil. HCl except lead carbonate.
Explanation:
Lead ion is a borderline acid in the context of hard-soft acid-base theory. Water is a hard solvent. Hard-hard and soft-soft interactions tend to be favorable; mixed interactions are not as favorable. Remember, solvation entails not only breaking bonds within the salt but also creation of bonds between ions and solvent.
Hot water likely weakens the lead ion-anion bonds.
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