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When mercuric iodide is added to the aqu...

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

A

Freezing point is raised.

B

Freezing point is lowered.

C

Freezing point does not change.

D

Boiling point does not change.

Text Solution

Verified by Experts

The correct Answer is:
A
During complex formation, more number of particles join to form a larger particles which does not break. So the particle number is reduced and the freezing point is elevated.
`2Kl+Hgl_2hArrK_2Hgl_4`
`K_2[HgI_4]hArr2K^(o+)+Hfl_4^(2-)`
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