The surface tension of a liquid at its boilin | vedclass

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(A) As the temperature of a liquid increases,the kinetic energy of its molecules increases,which weakens the intermolecular forces of attraction.Surfa

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Becomes zero

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(A) As the temperature of a liquid increases,the kinetic energy of its molecules increases,which weakens the intermolecular forces of attraction.Surface tension is a result of these cohesive forces. As the temperature approaches the boiling point,the thermal agitation becomes so intense that the net inward force on the surface molecules vanishes.At the boiling point,the liquid transitions into the vapor phase,and the distinction between the surface and the bulk disappears.Therefore,the surface tension of a liquid becomes zero at its boiling point.

The surface tension of a liquid at its boiling point

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