Osmosis & Osmotic pressure/ Colligative properties ( How to do numericals )class 12 - chapter 2
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- เผยแพร่เมื่อ 6 ต.ค. 2024
- What is Osmotic Pressure?
Osmotic pressure can be defined as the minimum pressure that must be applied to a solution to halt the flow of solvent molecules through a semipermeable membrane (osmosis). It is a colligative property and is dependent on the concentration of solute particles in the solution. Osmotic pressure can be calculated with the help of the following formula:
π = iCRT
Where,
π is the osmotic pressurei is the van’t Hoff factorC is the molar concentration of the solute in the solutionR is the universal gas constantT is the temperature
This relationship between the osmotic pressure of a solution and the molar concentration of its solute was put forward by the Dutch chemist Jacobus van’t Hoff. It is important to note that this equation only holds true for solutions that behave like ideal solutions.
Understanding Osmotic Pressure - What is Osmosis?
The term ‘osmosis’ refers to the movement of solvent molecules through a semipermeable membrane from a region where the solute concentration is low to a region where the solute concentration is high. Eventually, an equilibrium is established between the two sides of the semipermeable membrane (equal solute concentration on both sides of the semipermeable membrane).
Important note: The semipermeable membrane only allows the movement of solvent molecules through it - solute particles cannot pass through it.
If sufficient pressure is applied to the solution side of the semipermeable membrane, the process of osmosis is halted. The minimum amount of pressure required to nullify the process of osmosis is called osmotic pressure.
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Osmosis is moment of water from high concentration to low concentration....plz sir reply because I'm confuse here and i read it in a book that osmosis is moment of water or any substance from high concentration to low concentration
From high water potential to low water potential. Salt water has low water potential than pure water.
It is more correct.
Example is swelling of resins water moves inside the resins because of high concentration.
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Plz explain in the case of 4th collagative property...
Ap ni just osmosis awr o.pressure ki definition ki....
Thank you sir agr derivatives aur definition dega toh aisi ko likh lenge chlega n ??
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Sir high to low jaata hh na ki low to high
Water moves from low to high.
Swelling of kismis kept in water.
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