Question

The intermolecular space in case of liquid are
A) Less than solids
B) More and gas
C) More than the solids and less than the gases
D) More than the solid and gases

Answer 1

- Hint: We can understand by intermolecular space of particles in solid liquid or gasses. The state of a substance depends on the balance between the kinetic energy of individual particles and intermolecular forces. The kinetic energy keeps the molecules apart and moving around , and is a function of temperature of the substance.

Complete step-by-step solution -

The intermolecular space in solid very small and intermolecular forces are very large does the molecules in a solid can vibrate around their mean position.The particle in liquid have little free space between them and but can move about and slide past each other and in gases particles are highly separated and lot of space between them, so intermolecular spaces in liquids are more than the solid but less than the case so since (c) is correct.

Additional information:
Property of liquid:
The intermolecular attractive forces are strong enough to hold molecules close together.
Liquid is more dense and less compressible than gases.
Liquid have definite volume, independent of size and shape of their container
The attractive forces are not strong enough to keep night boring molecules in a fixed position and molecules are free to move fast to slide over one another. Thus liquid hi can be pure and assume the shape of their container.

Properties of solids:
The forces between and boring molecules are strong enough to keep them locked in a position
Solids compared like liquids are not very compressible due to the lack of space between molecules.
Due to intermolecular forces between neighboring molecules, solids are rigid.
Property of gases:
Kinetic energy of molecule is greater than any attractive force between the molecules
The lack of any significant attractive forces between the molecules of a gas to explain to feel its container
If forces become large enough that the gas exhibits non ideal behavior.
Particle are highly separated and lot space between them
That’s why option A, B and D are not correct, only C is correct.

Note:- The heating and cooling can change the kinetic energy of the particle in a substance and so we can change the physical state of substance by heating or cooling at increasing the pressure on a substance forces some the molecules closer together which increase the strength of intermolecular forces.