What is the value of latent heat of vapourisation of water?
What is the value of latent heat of vapourisation of water?
Concept: Latent heat of vapourisation of water
Step 1: Definition: The amount of heat energy required to change unit mass of water into vapour at its boiling point under
the atmospheric pressure without any change in the temperature.
Step 2: Value of latent heat of vapourisation of water is : 1) 22.6 x 105 J of heat is required to change 1 kilogram of water at its boiling
point of 100°C into steam at the same temperature of 100°C.
2)The energy of 1 kg of steam at 100°C is 22.6 x 105 J/kg more than that of water at the same
temperature.
Final answer: The value of latent heat of vapourisation of water is 22.6 x 105 J/kg.
Concept: Latent heat of vapourisation of water
Step 1: Definition: The amount of heat energy required to change unit mass of water into vapour at its boiling point under
the atmospheric pressure without any change in the temperature.
Step 2: Value of latent heat of vapourisation of water is : 1) 22.6 x 105 J of heat is required to change 1 kilogram of water at its boiling
point of 100°C into steam at the same temperature of 100°C.
2)The energy of 1 kg of steam at 100°C is 22.6 x 105 J/kg more than that of water at the same
temperature.
Final answer: The value of latent heat of vapourisation of water is 22.6 x 105 J/kg.
