What is surface tension and surface energy? Deive the relation between surface tension and surface energy.
Surface tension (S) can be defined as the tension on the surface of a liquid due to the cohesive force on the molecules of the surface. It results from the force of attraction between the molecules of the liquid.
Surface energy : When a molecule is taken from the inside to the surface layer, work is done against the inward resultant force while moving up in the layer. The potential energy of the molecule is increased due to this work. This extra energy a surface layer has is called the surface energy.
Since the units of surface tension and surface energy are the same so numerically we can state these two quantities are same!
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