Question

When mercuric iodide is added to the aqueous solution of potassium iodide, the.

• A. Freezing point is raised
• B. Freezing point is lowered
• C. Freezing point does not change
• D. Boiling point does not change

Answer 1

Answer: (B)

Freezing point is lowered

Answer 2

$HgI_{2}$ although insoluble in water but shows complex formation with KI and freezing point is decreases.