Question

Minimum freezing point is shown by which of the following 0.01 m aqueous solution?
0 Urea
O NaCl
O Al2(SO4)3
O CaCl2​

Answer 1

The minimum freezing point is shown by 0.01 m aqueous solution of:

(C) Al2(SO4)3

- The depression in freezing point is a colligative property.

- So, the solute which gives the maximum no of ions on dissociation, will reduce the freezing point the most and hence the minimum freezing point.

- Urea does not dissociate in aqueous solution, so it will not have much effect on the freezing point.

- NaCl gives 2 ions, Al2(SO4)3 gives 5 ions and CaCl2 gives 3 ions on dissociation.

- So, Al2(SO4)3 will give the minimum freezing point of 0.01 m aqueous solution.

Answer 2

Answer:

3) Al2(SO4)3

Explanation:

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