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Difference between boiling and melting
The process due to which a solid changes into liquid state by absorbing heat energy is called melting or fusion and the constant temperature at which a solid changes into liquid state by absorbing heat energy is called melting point.
Again,the process due to which a liquid changes into gaseous state by absorbing heat energy is called boiling or vaporisation and the constant temperature at which a liquid rapidly changes into gaseous state by absorbing heat energy is called boiling point.
Specific latent heat of vaporization
Latent heat
The energy input is used to break down the structure of the material without change in temperature is called latent heat.
See the above graph: from b – c and d – e is the region where the structure broken from solid to liquid and liquid to gas.
Specific latent heat of vaporization
The amount of energy needed to change 1Kg of liquid into vapor without any change of temperature is the specific latent heat of vaporization of the liquid)).
It is represented by Lv.
The formula and unit is same as mentioned above for specific latent heat of fusion Lf.
Specific latent heat of fusion
Latent heat
The energy input, which is used to break down the structure of the material without change in temperature is called latent heat.
See the above graph: from b – c and d – e is the region where the structure broken from solid to liquid and liquid to gas.
Specific latent heat of fusion
The amount of energy needed to melt 1kg of substance without any change of temperature is called specific latent heat of fusion.
It is represented by (L).
L= E / m
(where E is energy ( V * I or P * t ) and m is mass of the object.)
L = V * I * t / m
It is measured in J / kg