Question

Which of the following is soluble in boiling water, but sparingly soluble in cold water?

• A. $PbC{l}_2$
• B. $PbB{r}_2$
• C. $Pb{I}_2$
• D. All of these

Answer 1

Answer: (C)

$Pb{I}_2$

$Pb{I}_2$ is soluble in boiling water, but sparingly soluble in cold water. On heating it forms a colorless solution. On cooling it crystallizes as yellow hexagonal platelets.