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surface tension

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gsunil

gsunil

Chemical
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why does surface tension decreases with temperature. dowe have mechanistic explanation for it.
 
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Surface tension of liquids is exactly the same thing as suface energy in solids and is a due to the attraction between molecules that cause a material to be a liquid or solid rather than a gas (no attraction between molecules). Surface tension decreases with temperature up to the boiling point where surface tension approaches zero.
 
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The surface tension is zero at the critical point, not the boiling point.
 
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