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प्रश्न
What happens when the external pressure applied becomes more than the osmotic pressure of solution?
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उत्तर
When the external pressure exerted on the solution is higher than the osmotic pressure, the pure solvent starts flowing out of the solution through the semi-permeable membrane. This process is known as reverse-osmosis.
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संबंधित प्रश्न
What are hypertonic solutions?
Which of the following is a colligative property?
At constant temperature the osmotic pressure of a solution is ____________.
Osmotic pressure of a solution is 0.0821 atm at a temperature of 300 K. The concentration in moles/litre will be:
Isotonic solutions must have the same:
(i) solute
(ii) density
(iii) elevation in boiling point
(iv) depression in freezing point
Give an example of a material used for making semipermeable membrane for carrying out reverse osmosis.
Match the items given in Column I and Column II.
| Column I | Column II |
| (i) Saturated solution | (a) Solution having same osmotic pressure at a given temperature as that of given solution. |
| (ii) Binary solution | (b) A solution whose osmotic pressure is less than that of another. |
| (iii) Isotonic solution | (c) Solution with two components. |
| (iv) Hypotonic solution | (d) A solution which contains maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature. |
| (v) Solid solution | (e) A solution whose osmotic pressure is more than that of another. |
| (vi) Hypertonic solution | (f) A solution in solid phase. |
Osmotic pressure of a solution increases if
Assertion (A) : Osmotic pressure is a colligative property.
Reason (R) : Osmotic pressure is proportional to the molality.
Isotonic solutions are the solutions having the same ______.
