The amount of heat energy required to solid substance solid into a liquid state without any changes in temperature
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Apex: The amount of energy required to turn a mole of a solid into a liquid
The energy required to melt a substance. (Apex)
The amount of heat required to melt a solid material into liquid (say ice into water) without any rise in temperature is known to be the latent heat of fusion or latent heat of melting.
The latent heat of fusion is the heat associated with changing the phase from liquid to solid or solid to liquid. Thus, it is the heat required to melt a solid or the heat evolved when forming a solid from a liquid.
The amount required to go from a solid into a liquid
-Apex Learning
the energy required to go from a solid to a liquid~ apex
The amount of heat released / absorbed from a substance at constant temperature as you change state from liquid->solid / solid->liquid.
The energy required to go from a liquid to a gas ~ Apex
The energy required to go from a solid to a liquid-Apex
the hidden heat energy
It is called latent because heat is supplied without any increase in temperature.
The latent heat of fusion of 1kg water is 334 kJ/kg. (Wikipedia)
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 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.
It is called the enthalpy of fusion of a substance, also known as (latent) heat of fusion.
It is called latent because heat is supplied without any increase in temperature.
The latent heat of fusion
The latent heat of fusion of 1kg water is 334 kJ/kg. (Wikipedia)
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 latent heat of evaporation
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.
They are the same thing. Fusion and solidification both mean the changing of a liquid to a solid.
the heat which is absorbed by a substance for changing solid into liquid state by keeping temperature constant is called latent heat of fusion while the heat which is evolved during phase change of liquid to vapour state at constant temperature is called latent heat of vapourization
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
This energy is the enthalpy of fusion (or 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.
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.