Question

How to calculate surface tension of any liquid?

Answer 1

Surface tension is the attractive force in liquids that pulls surface molecules into the rest of the liquid, minimizing the surface area. These attractive forces are due to electrostatic forces. We typically refer to this cohesion at the gas-liquid surface (not liquid-solid or liquid-liquid surfaces). We often see this occur with water, but it occurs with all other liquids to some degree.

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The general formula for measuring surface tension is: gamma equals force divided by length.
Gamma represents surface tension, Frepresents force, and d represents the length along which the force is felt. The units for surface tension are Newtons per meter (N/m) or dyne per centimeter (dyn/cm).