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Is latent heat of vaporization of water constant?

Is latent heat of vaporization of water constant?

The latent heats of evaporation are based on fluid boiling point temperatures at atmospheric pressure….Latent heat of vaporization of fluids – alcohol, ether, nitrogen, water and more.

Product Latent Heat of Evaporation*) – he –
(kJ/kg) (Btu/lb)
Toluene 351 151
Turpentine 293 126
Water 2256 970.4

Why latent heat of vaporization of water is high?

The latent heat of vaporization is higher than the latent heat of fusion since gas molecules have the largest intermolecular space and the force of attraction between the molecules is almost negligible. Therefore, more energy is required to convert liquid to gas.

What is the latent heat of vaporization of steam?

Latent heat of steam is commonly known as the latent heat of vaporization. Latent heat of vaporization is the amount of heat required to convert 1 Kg of liquid to vapour or steam. The value of latent heat is the property of the individual substance and it varies depending on the substance.

What is latent heat of vaporization with example?

For example, when a pot of water is kept boiling, the temperature remains at 100 °C (212 °F) until the last drop evaporates, because all the heat being added to the liquid is absorbed as latent heat of vaporization and carried away by the escaping vapour molecules. …

What are three types of latent heat?

There are three different types of latent heats,

  • Latent Heat of Fusion,
  • Latent Heat of Vaporization,
  • Latent Heat of Sublimation.

What is latent heat of vaporization in simple words?

Latent heat of vapourisation is a physical property of a substance. When a material in liquid state is given energy, it changes its phase from liquid to vapour without change in temperature, the energy absorbed in the process is called latent heat of vaporization.

What are the 4 types of latent heat?

Types of Latent Heat

  • Latent Heat of Fusion,
  • Latent Heat of Vaporization,
  • Latent Heat of Sublimation.

What is an example of latent heat?

What is the specific latent heat of water?

Water has latent heat of vaporization of 540 calories per gram, the amount of heat energy that is necessary to convert 1 g of liquid water at 100°C to steam at 100°C, or 40.71 kJ/mol or about 2,260 kJ/kg water.

How to determine heat of vaporization?

To get the heat of vaporization, you simply divide the molar heat by 18.015 g/mol. See Example #3 below. Molar heat values can be looked up in reference books. The molar heat of vaporization equation looks like this: The meanings are as follows: 2) ΔH vap is the symbol for the molar heat of vaporization.

What is latent heat transfer?

Latent Heat Transfer. At the point where one of the substances is ready to change state or phases (solid to liquid, liquid to gas, etc), heat is transferred from one substance without a corresponding temperature shift in the other substance. This process of giving off or absorbing heat without changing temperature is known as “latent heat transfer.”.

What is the formula for latent heat of fusion?

Equation of Latent Heat of Fusion. The equation for H f is as follows: H f =ΔQ f/ m. Here, ΔQ fis the change in the energy of the substance and m is the mass of the substance.