JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Lowering of vapour pressure

  • question_answer
    When mercuric iodide is added to the aqueous solution of potassium iodide, the      [IIT 1987]

    A)                 Freezing point is raised

    B)             Freezing point is lowered

    C)                 Freezing point does not change

    D)                 Boiling point does not change

    Correct Answer: B

    Solution :

                \[Hg{{I}_{2}}\] although insoluble in water but shows complex formation with KI and freezing point is decreases.


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