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Which of the following aqueous solutions...

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

A

0.1 molal `AI_(2)(SO_(4))_(3)`

B

0.1 molal `BaCI_(2)`

C

0.1 molal `AICI_(3)`

D

0.1 molal `NH_(4)CI`.

Text Solution

Verified by Experts

The correct Answer is:
d
`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` is also minimum.
freezing point of NH_(4)CI solution is the maximuum.
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