Question

The temperature remains constant once a liquid riches to its boiling under normal atmospheric pressure, though the heat is being supplied from outside. give reasons?​ long answer​

Answer 1

Answer:

(this is due to the latent heat of vaporization) .

latent heat is that heat which is used up for the change in the state of the substance without any rise in temperature.

as a result temperature remains constant once a liquid reaches to its boiling point under normal atmospheric pressure the heat is supplied from outside.

Answer 2

Heat energy get used up in changing State of water

Explanation:-

The temperature remains constant during boiling of water even though heat is supplied constantly because all the heat energy provided is used up in changing the state of water from liquid to gaseous water vapour. Therefore all the heat energy provided to the liquid increases the kinetic energy of the particles and temperature doesn't increase. So supplied heat energy is used to increase kinetic energy of molecules.