identify the false statement
a.vapour pressure of a liquid increases with increase of tempertaure.
b.the melting point of the ionic solids are very high due to the existence of strong electrostatic force of attraction between the oppositely charged ions
c.viscosity of gases decreases with increase of temperature
d.an azeotropic mixture can't be separated by fractional distillation
and what is an azeotropic mixture??

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Solution

The statement c is false.
The gas viscosity will increase with increasing temperature. According to the kinetic theory of gases,viscosity should be proportional to the square root of the absolute temperature.
Azeotropic mixture are the binary mixtures that have the same composition in liquid and vapour phase and boil at constant temperature.

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