Question

Does Latent heat change with pressure?

Answer 1

1. The latent heat of vaporization of water means the amount of heat required to break the intermolecular forces and convert it into the gaseous phase. As there is an increase in the pressure more heat is required to overcome the pressure force acting. Therefore, the latent heat is more.
2. The latent heat of condensation is the amount of heat removed so that water becomes ice. As the pressure is increased, the increased pressure helps in binding the molecules. Therefore less amount of heat needs to be removed.
3. So, as pressure increases, latent heat of vapourisation decreases while latent heat of condensation decreases.