1.

Which of the following aqueous solutions has the highest freezing point ?

Answer»

0.1 molal `AI_(2)(SO_(4))_(3)`
0.1 molal `BaCI_(2)`
0.1 molal `AICI_(3)`
0.1 molal `NH_(4)CI`.

Solution :`DeltaT_(F)=ixxK_(f)xxm or DeltaT_(f)propi`
Thus, lower the value of I, lower is `DeltaT_(f)` and higher is the FREEZING point of the solution.
Since 'I' is LEAST (2) for `NH_(4)CI, DeltaT_(f) "for" NH_(4)CI` isalso minimum.
freezing point of NH_(4)CI solution is the maximuum.


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