Define latent heat of vaporization. Explain why particles in steam have more energy than water at 100°C.
CBSE Class IX Science SA 1 ( 2 marks)
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The amount of heat energy required to convert 1 kg of liquid to vapour at its boiling point at atmospheric pressure is called latent heat of vaporization.
Particles in steam absorb extra energy in the form of latent heat of vaporization. Thus, hasmore energy.
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"Latent heat of vaporization:
The latent heat of vaporization can be described as the amount of heat required to convert unit mass of liquid into its vapor state without any change in its temperature.
The steam molecules are at 100°C which have more energy than liquid water at 100°C because "latent heat of vaporization" is added to liquid molecules for the conversion to vapor state.
Overall the particles of steam have higher energy than the molecules of liquid water due to "latent heat of vaporization". "
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