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1 answer:
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Answer:
0.075 m solution has the lowest freezing point.
Explanation:
Depression in freezing point is given by:
where,
=Depression in freezing point
= Freezing point constant of solvent
1 - van't Hoff factor
m = molality
According question, molality of all the solutions are same and are in prepared with same solvent. So, values of molality and will remain the same and will not effect the freezing point of the solution.
The lowering in freezing point will now depend upon van't Hoff factors of the solutions. Higher the value of van'Hoff factor more will be the lowering in freezing point of the solution.
The van't Hoff factor of solution =
The van't Hoff factor of solution =
The van't Hoff factor of solution =
The van't Hoff factor of solution =
The van't Hoff factor of solution =
The solution of ammonium phosphate has the highest values of van't Hoff factor which will result in maximum lowering of the freezing point of the solution.
Hence, 0.075 m solution has the lowest freezing point.