As we increase the temperature of liquid, its properties change. Which of the following would not be an expected change in the properties of a typical liquid as we increase its temperature ?
(1) Decrease in viscosity.
(2) Decrease in molecular force.
(3) Increase in surface tension.
(4) Increase in vapour pressure.
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dude if we increase the tem.... then the molecular force decrease.If we inc... its force then the vapours pressure increase
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answer : option (3) increase in surface tension.
explanation : when we increase the temperature of liquid, kinetic energy of molecules increase. and we know, if kinetic energy of molecules increase, intermolecular force of attraction decreases. if intermolecular force of attraction decreases, definitely surface tension decreases.
so, if the temperature of the liquid increases, surface tension decreases.
but here given increase in surface tension so, option (c) is correct choice.
explanation : when we increase the temperature of liquid, kinetic energy of molecules increase. and we know, if kinetic energy of molecules increase, intermolecular force of attraction decreases. if intermolecular force of attraction decreases, definitely surface tension decreases.
so, if the temperature of the liquid increases, surface tension decreases.
but here given increase in surface tension so, option (c) is correct choice.
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