If a solution of 0.1 M concentration is separated from water with the help of a semipermeable membrane, it develops an osmotic pressure of 2.3 bars and cause osmosis to occur. This means that osmosis could be stopped by

The application of a pressure of 2.3 bars on water side

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The application of a pressure of 2.3 bars on solution side

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The application of a pressure 2.3 bars on any side

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Lowering a pressure of 2.3 bars on the solution side

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Solution

The correct option is D The application of a pressure of 2.3 bars on solution side
As water is entering the solution, we need to apply pressure on the solution to counter balance the entry of water into the solution. This actually happens in a cell, when water enters into the cell. The pressure/ force, which causes entry of water into the cell is not only the osmotic pressure but the difference of osmotic pressure and turgor pressure/ wall pressure, because the turgor pressure/ wall pressure exerts force/ pressure in the direction opposite to the direction of movement of water.

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What is the direction of net osmotic movement of water of a solution $A$ enclosed in a semipermeable membrane having an osmotic potential $- 30$ bars and pressure potential $5$ bars is surrounded in a solution $B$ of osmotic potential $- 10$ bars and pressure potential $= 0 ?$

Q. At

300 K

, two solutions of glucose in water of concentration

0.01 M

and

0.001 M

are separated by semipermeable membrane. Pressure needs to be applied on which solution, to prevent osmosis? Calculate the magnitude of this applied pressure?

Q. A 250 mL water solution containing 48 g of sucrose (molecular mass = 342) at 300 K is separated from pure water by means of a semipermeable membrane. What pressure must be applied on solution as to prevent osmosis?

At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration?

Osmosis is the flow of solvent into solution of higher concentration from solution of lower concentration through semi-permeable membrane. Which of the following is incorrect?

a. Osmotic pressure is the external pressure required to be applied so that there is no net movement of solvent across the membrane.

b. Reverse Osmosis is a process where you demineralize or deionize water by pushing it under pressure through a semi-permeable Reverse Osmosis Membrane.

c. In Osmosis when equilibrium is reached, then water stops flowing across the membrane

d. None of these

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