Question

Why does a liquid’s rate of evaporation increase when the liquid is heated?

Answer 1

the conversion of liquid to vapours is a change in state of a system from one state to other

there are basic two differences between three states of matter

1. thermal energy: gas has highest thermal energy tthen liquid and least us of solids

2. intermolecular forces of attractions

solids have highest intermolecular forces of attraction , then liquid and least in gas

sovas we increase the temperature the forces if attraction decrease s and thermal energy increases.

So when we heat liquid more moleculws gets energised attaining thermal motion in the range of gas thus the rate if evaporation increases.

Answer 2

Answer:

liquid’s rate of evaporation increase when the liquid is heated, due to the increase in the kinetic energy of liquid molecules.

Explanation:

• In liquids mostly molecules are attracted to other molecules by the process of Van der Waals attraction or dipole dipole forces like hydrogen bonds in water.
• These forces are weaker than covelent bonds.
• As the temperature of a liquid is increased, the kinetic energy of molecules also increases.
• Which causes the faster movement of molecules, due to this faster movement the weak dipole interactions between molecules breaks.
• As the interactions breaks, molecules will leave the surface of liquid turning into vapor.
• Hence by increasing the temperature of liquid the rate of evaporation can also be increased.
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