Osmotic Pressure

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Calculating Osmotic Pressure Osmotic Pressure

We need to know the molar concentration of dissolved species in order to calculate the osmotic pressure of an aqueous solution. We calculate the osmotic pressure, The symbol for pi (pi), using the following equation:

Equation for osmotic pressure

Where:

M is the molar concentration of dissolved species (units of mol/L). R is the ideal gas constant (0.08206 L atm mol-1 K-1, or other values depending on the pressure units). T is the temperature on the Kelvin scale.

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