Why does the temperature remain constant during the boiling of water even though heat is supplied continuously class9?

Distribute the referral code to your friends and ask them to register with Tutorix using this referral code.

Índice Show

States of water
The boiling point of water
Articles to Explore:

Once we get 15 subscriptions with your referral code, we will activate your 1 year subscription absolutely free.

Your subscribed friend will also get 1 month subscription absolutely free.

Why does the temperature remain constant during the boiling of water even though heat is supplied continuously ?

This is because the heat supplied is absorbed by the water particles and this heat increases the kinetic energy of all particles, which weakens the force of attraction between the particles and they start moving freely. As a result, water is converted into gas. This heat energy is called latent heat of vaporisation.

Concept: Change of State of Matter

Is there an error in this question or solution?

Why does the temperature remain constant during the boiling of water even though heat is supplied contivuously ?

Open in App

Suggest Corrections

Answer:

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 increases the kinetic energy of the particles and temperature doesn’t increase.
Once the water starts boiling, all the heat supplied will be used in the conversion of water into steam at the boiling point of water.

States of water

Water is found in three states:

Solid (ice and hail)
Liquid (regular water)
Gas (vapour)

The boiling point of water

The boiling point of water is 100 °C or 212 °F at 1 atmosphere of pressure.

The boiling point of water depends on the atmospheric pressure, which changes according to elevation.
Water boils at a lower temperature as you gain altitude (e.g., going higher on a mountain)
Boils at a higher temperature if you increase atmospheric pressure (coming back down to sea level or going below it).