Latent heat of vapourisation can be define as the rate by which water is heat to vapourise, it has a difference with evaporation because evaporation occurs directly when the water start heatin while vapourisation always start in a specific temperature
The amount of energy needed to change the "state of matter" is termed as "latent heat". This is not same for vapourisation (liquid to vapour) or for fusion (solid to liquid). For example, latent of fusion is 79.7 cal whereas latent heat for vapourisation is 541 calories. The latent depends on how closely the atoms and molecules in the matter are closely packed.
Heat of fusion is called the latent heat of fusion because it is the heat energy required to change a substance from a solid to a liquid phase, or vice versa, without a change in temperature. This heat energy is "hidden" as it is being used to break the intermolecular bonds holding the substance together, rather than increasing its temperature.
The formula to calculate the latent heat of fusion is Lf = Q / m, where Lf is the latent heat of fusion, Q is the amount of heat added or removed during the phase change, and m is the mass of the substance undergoing the phase change.
The latent heat of fusion is dependent on the substance undergoing the phase change from solid to liquid. It is influenced by the specific properties of the material, such as its molecular structure and intermolecular forces. The amount of energy required to overcome these forces and convert the substance from a solid to a liquid state determines the value of the latent heat of fusion.
latent heat of fusion tells us about the amount of energy that must be taken off from water at 00C to fuse it into ice at 00C . Actually this in this phase temperature remains constant and this energy is (either latent heat of fusion or latent heat of vaporization is the potential energy which is possessed by the states by their virtue.
latent heat of vapourisation is the heat energy required to change 1 kg of a liquid to gas at atmospheric pressure at its boiling point where latent heat of fusion is the amount of heat energy required to change 1 kg of solid to liquid at its melting point so that is why latent heat of vapourisation higher than latent heat of fusion.
The amount of energy needed to change the "state of matter" is termed as "latent heat". This is not same for vapourisation (liquid to vapour) or for fusion (solid to liquid). For example, latent of fusion is 79.7 cal whereas latent heat for vapourisation is 541 calories. The latent depends on how closely the atoms and molecules in the matter are closely packed.
The latent heat of fusion is the amount of heat required to change a substance from solid to liquid at its melting point, while the latent heat of vaporization is the amount of heat required to change a substance from liquid to gas at its boiling point. These concepts are important in processes like melting and boiling of substances, refrigeration, and even in weather phenomena like cloud formation and rain.
The latent heat of evaporation
The latent heat of fusion
They are the same thing. Fusion and solidification both mean the changing of a liquid to a solid.
latent heat of fusion tells us about the amount of energy that must be taken off from water at 00C to fuse it into ice at 00C . Actually this in this phase temperature remains constant and this energy is (either latent heat of fusion or latent heat of vaporization is the potential energy which is possessed by the states by their virtue.
The latent heat of fusion is defined as the heat energy required to convert a kg of a substance of liquid into solid of the same substance without a change of temperature. Q = mL where Q = Heat Energy in joules, m=mass of substance, L= Latent heat of fusion Taking units, [J] = [kg] [L] [L] = [J]/[kg] so units of latent heat of fusion are joules.kg-1
The latent heat of vaporisation of water requires more energy. This is because on melting, the intermolecular bonds in water are only weakened whereas on boiling, the bonds are completely broken, which requires a larger amount of energy.
Heat of Fusion
as cotton absorbs sweat, sweat is mainly made up of water and some salts this water takes the heat energy from our body and undergoes latent heat of vapourisation (changing of state of matter) .Due to latent heat of vapourisation water changes its form to water vapour and goes in the surrounding's. this makes the body cool and comfortable.
latent heat of fusion.