Osmotic Pressure

Osmotic pressure is the minimum pressure that has to be applied to a solution to stop the inward flow of its pure solvent across a semipermeable membrane. It’s additionally outlined because the live of the tendency of an answer to require in pure solvent by diffusion. Potential pressure level is that the most osmotic pressure that would develop in an exceedingly resolution if it were separated from its pure solvent by a tissue layer.

Osmosis happens once 2 solutions, containing totally different concentration of matter, are separated by a by selection semipermeable membrane. Solvent molecules pass preferentially through the membrane from the low-concentration solution to the answer with higher matter concentration. The transfer of solvent molecules can continue till equilibrium is earned.

Formula:

Osmosis is the phenomenon of the route of solvent but not solute through a semipermeable membrane from solvent to the solution or from weak to concentrated solution. The natural phenomenon like pure water from the sea, industrial extraction and purification are based on the osmosis process. Osmosis can be described as a selective separation aspect.
Osmotic Pressure = iRTc

Where:

• i = number of ions created by dissociation of solute molecules
• R = ideal gas constant
• T = absolute temperature in K
• C = molar or molal concentration

The formula which relates osmotic pressure to temperature and concentration is similar to ideal gas equation.

πV = _nRT

Where:

• ‘π’ is the osmotic pressure in mmHg
• n = number of solute particles
• R = universal gas constant
• V = volume of the solution in litres