For water specific latent heat of vaporization has a value of 2200 kJ kg-1, whereas specific latent heat of fusion has a value of 340,000 J kg-1. Why the value of specific latent heat of vaporization is greater than value of specific latent heat of fusion?
Answers
Answer:
Latent heat of vaporization of liquid is defined as the amount of heat required to change the unit mass of liquid at boiling point into vapour at the same temperature. So,latent heat of steam is defined as the amount of heat required to change a unit mass of water from100to steam at the same temperature.
Heat of fusion is the energy needed for one gram of a solid to melt without any change in temperature. Heat of vaporization is the energy needed for one gram of a liquid to vaporize (boil) without a change in pressure.
The latent heat of vaporization for water is 22.6 x 10^5 J/kg. This means that 22.6 x 10^5 J of heat energy must be added to turn one kilogram of water from liquid to gas at 100 degrees Celsius.
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