Question

at what temperature in the Kelvin scale does water boil explain what happen when we supply heat energy to water till it change its States what is the heat energy called

Answer 1

In absolute scale or Kelvin scale water burns at 373K.
The heat energy is called latent heat

Answer 2

Hello Mate!

Your questions has 3 parts. I will answer them one by one.

■ The temperature at which water boils is 100°C.
As we know that, K = 273 + t°C
K = 273 + 100°C
Hence, water boils at 373K.

■ When we supply heat, for instance in case when we melt ice on a burner, the temperature at thermometer starts increasing. But at one point of time, the temperature stops increasing and ice starts to melt.

At this point, the heat is absorbed by particles or molecules of ice to overcome the intermolecular force of attraction and change from solid to liquid. It is a hidden form of heat, therefore temperature remains same at change of state.

■ This hidden form of heat is called ' Latent Heat '.
When ice change to water, then its called Latent Heat of Fussion. When water change to vapour by hidden heat, then its called Laten Heat of Vapourisation.

Hope it helps!☺✌