Question

Explain the term

1 ) Latent Heat​

Answer 1

Answer:

Latent heat is defined as the heat or energy that is absorbed or released during a phase change of a substance. It could either be from a gas to a liquid or liquid to solid and vice versa. Latent heat is related to a heat property called enthalpy.

However, an important point that we should consider regarding latent heat is that the temperature of the substance remains constant. As far as the mechanism is concerned, latent heat is the work that is needed to overcome the attractive forces that hold molecules and atoms together in a substance.

Explanation:

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Answer 2

Answer:

( i ) The quantity of heat absorbed or released by a substance to change its state at constant temperature is called latent heat.

( ii ) The heat energy absorbed at constant temperature during transformation of solid into liquid is called latent heat of fusion. Latent heat of fusion of ice is 80 cal/g.

(iii) The heat energy absorbed at constant temperature during transformation of liquid into gas is called Latent heat of vapourization. The latent heat of vaporisation of water is 540 cal/g.

(iv) During change of state there is no rise or fall of temperature.

Explanation:

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