Question

Name the compound which is insoluble in cold water but soluble in hot water?

Answer 1

Part 1: Identification:-

Lead chloride (PbCl₂) is a salt in nature that isn't soluble in cold water but soluble in hot water. $$\begin{gathered} {\mathrm{PbCl}}_2+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{Cold}\right)⇢\mathrm{Insoluble} \\ {\mathrm{PbCl}}_2+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{Hot}\right)⇢{\mathrm{Pb}}^{2+}+2{\mathrm{Cl}}^{-} \\ \left(\mathrm{soluble}\right) \end{gathered}$$

Final answer:- The compound which is insoluble in cold water but soluble in hot water is Lead chloride (PbCl₂)