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Principles of Colloid and Surface Chemistry, Revised and Expanded, 3rd Edition by CRC Press

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3

Solution Thermodynamics

Osmotic and Donnan Equilibria

All faults or defects, … Pantocyclus attributed to some deviation from perfect Regularity in the bodily figure, caused perhaps … by some collision in a crowd; by neglect to take exercise, or by taking too much of it; or even by a sudden change of temperature.

From Abbott’s Flatland

3.1  INTRODUCTION

3.1a  What Are Osmotic Pressure and Donnan Equilibria?

Osmotic pressure is a property of solutions of organic or inorganic solutes and appears in a number of contexts in the study of colloidal systems. As we see below, it is usually defined using a real or thought experiment involving a solution separated from the pure solvent by a membrane permeable only to the solvent. In such a setup, the ...

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