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Q.

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

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a

Freezing point is raised

b

Freezing point is lowered

c

Freezing point does not change

d

Boiling point does not change

answer is A.

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Detailed Solution

Due to the reaction between mercuric iodide and potassium iodide no. of particles decreases. So freezing point is raised. 

HgI2+2KI→K2(HgI4)

7 Particles        3 Particles

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