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Increasing amount of solid Hgl_(2) is added to 1 L of an aqueous solution containing 0.1 mol KI. Which fo the following graphs do represent the variation of freezing point of the resulting with the amount of Hgi_(2) added? |
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Answer»
`HgI_(2)+2KitoK_(2)HgI_(4)` Mole` 0.05""0.2""0.1""0.05` `implies`0.05moles ofare REQUIRED for its complete reaction with KI. Thus, as `HgI_(2)`is being added, number of SOLUTE molecules will decrease causing `DeltaT_(f)`to decrease[Causing `T_(g)`to increase]. When whole of KI has been converted to `K_(2)HgI_(4)` , further addition of `HgI_(2)` doesn’t change the `T_(g)`since it is a sparingly soluble SALT. |
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