Question

Is there any relationship of latent heat with the Regelation?

Answer 1

Hint: Firstly, know the actual meaning of what is latent heat and Regelation. So, here regelation means the phenomenon in which the ice converts to liquid due to applied pressure and then re-converts to ice once the pressure is removed is called Regelation. Whereas, latent heat is the amount of heat released or absorbed by 1 mole of a substance during phase change at a constant temperature. Latent heat is taken in / or given out when a material changes state e.g., solid to liquid or liquid to gas.
 $ Density = \dfrac{{Mass}}{{Volume}} $ .

Complete answer:
Yes, when ice melts, heat is absorbed, but the temperature does not change. Also, when water refreezes, heat is given out, but the temperature does not change. This heat absorbed or given out is the latent heat.
When we place ice and apply pressure to it. It means when there is an increase in pressure the ice melts i.e. basically, it converts to liquid state. And when the pressure is released, it comes back to its normal position (ice). This is known as Regelation. This happens because of anomalous behavior of water. When pressure increases density increases. Pressure increases, density also increases but volume decreases. when the volume changes it means a work is done. Basically, when a work is done it means energy is released. This energy works for latent heat. Normally in latent heat we give energy in the form of heat. but here we give energy in the form of work done.
So, latent heat has a relationship with Regelation.

Note:
It should be remembered that no changes will be made to the temperature. Density of ice is less than the density of water. Latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature. And Water is formed due to the increase of pressure and it serves as a lubricant.