Question

What are the condition for getting accurate molar mass of a solute from colligative properties of solution?​

Answer 1

Answer:

(iii) Conditions for getting accurate value of molecular mass are, (a) The solute must be non-volatile. (b) The solution must be dilute. (c) The solute should not undergo dissociation or association in the solution.

Explanation:

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Answer 2

Answer:

The conditions for getting accurate molar mass of a solute from colligative properties of solution are:

1. Relative lowering of Vapour Pressure
2. Elevation of Boiling Point
3. Depression of Freezing Point
4. Osmosis and Osmotic Pressure

1. Relative lowering of Vapour Pressure: The Vapour Pressure of a solute is lowered when we add non-volatile solute in it; this is called lowering of Vapour Pressure.
2. Elevation of Boiling Point: We know that addition of non volatile solute in a solvent, the vapour pressure of the solvent decreases.
3. Depression of Freezing Point: When the vapour pressure of the solution is reduced, the freezing of the solution decreases.
4. Osmosis and Osmotic Pressure: Osmosis is defined as the flow of liquid through a semi permeable membrane which allows only solvent molecules to pass through it.

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