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Activity Discussion Science & Technology What is Latent heat of vaporization? Reply To: What is Latent heat of vaporization?

  • Nehal

    May 26, 2021 at 11:47 am
    Not Helpful

    What is the latent heat of vaporization?

    Latent heat (also known as latent energy or heat of transformation) is the energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process — usually a first-order phase transition.*

    When a substance changes its state of matter, that is when a substance changes from its solid-state to a liquid state or liquid state to a gaseous state or liquid state to solid-state and vice versa. In this process, the energy that is released or absorbed when the substance changes its matter is defined as Latent heat. Latent heat is related to a heat property called enthalpy. It is detonated as ΔHv. Latent heat is related to measures other than changes among the solid, fluid, and fume periods of a single substance. Numerous solids exist in various crystalline modifications, there is generally absorption or evolution of latent heat. The process when one substance change it involves the transfer of heat. The change of state is physical.

    Latent heat of vaporization is an actual property of a substance. At the point when material in the fluid state is given energy, it changes its stage from fluid to fume without change in temperature, the energy retained in the process is called the latent heat of vaporization. The amount of heat is expressed as joules or calories.

    The formula for specific latent heat is as followed:

    L = Q/m


    L stands for specific latent heat

    Q stands for the heat retained or discharged

    m stands for the mass of a substance

    Units used in specific latent heat are kilojoules per kilogram (kJ/kg) and joules per gram (J/g).


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