Osmotic pressure of a solution is

more than that of a pure solvent

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less than that of a pure solvent

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variable depending upon concentration

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equal to that of pure solvent

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Solution

The correct option is A more than that of a pure solvent
The pressure that is required to prevent water from diffusing or undergoing osmosis in spite of a difference in water potentials, is called osmotic pressure (OP). Since concentration of solute is more in a solution than in pure water, water from pure water tries to diffuse or undergo osmosis to the solution. Hence, the pressure required to prevent water entry to the solution, i.e. osmotic pressure of a solution is always higher than that of pure water or solvent.

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Similar questions

For a solution to form positive deviation,the solute-solvent interactions must be less than solute-solute and solvent-solvent interactions,making it easier for the molecules to escape in its pure form.still,why does the vapour pressure of the solution showing positive deviation increase compared to the pure form?

Assertion (A) When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side.
Reason (R) Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution.

5 mL of acetone is mixed with 100 mL of H₂O. Vapour pressure of water above the solution is:

Q. When two moles of a non-volatile solute are dissolved in three moles of a solvent, the vapour pressure of the solution relative to that of the pure solvent is:

Q. Consider the following statements:

I. Osmotic pressure is the external pressure that must be applied to a pure solvent to prevent osmosis.
II. Osmotic pressure is proportional to the molarity.
III. Osmotic pressure is a colligative property.

Choose the correct statements.

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