Question

The amount of heat rejected during freezing of a substance is .............. the amount of heat absorbed during melting of the same mass of the substance PLEASE TELL AS SOON AS POSSIBLE​

Answer 1

Answer:

1. latent heat of fusion ....................

Answer 2

Answer:

The amount of heat rejected during the freezing of a substance is equal to the amount of heat absorbed during melting of the same mass of the substance.

Explanation:

• At constant temperature, when any substance changes from liquid phase to solid phase with the rejection of heat is known as freezing or fusion. The temperature at which the substance freezes into solid phase is called freezing point.
• At constant temperature, when any substance changes from solid phase to liquid phase with the  absorption of heat is known as melting. The temperature at which the substance melts into liquid phase is called melting point.
• The amount of heat required to change the solid phase to liquid phase is called latent heat of fusion.
• For a given mass of the substance, during melting the amount of heat energy is absorbed is same as that rejected during freezing.