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What is meant by latent heat of vaporization?

Latent heat of vaporization is a physical property of a substance. It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. It is expressed as kg/mol or kJ/kg.

Can latent heat negative?

When ice is converted to liquid water(at a particular temperature) the amount of energy to be supplied to the ice for that transition is its latent heat of fusion. Similarly during the transition of liquid water to ice the heat is released thus negative .

Why is latent heat called latent heat?

Latent heat, also called heat of transformation, is the heat given up or absorbed by a unit mass of a substance as it changes from a solid to a liquid, from a liquid to a gas, or the reverse of either of these changes. It is called latent because it is not associated with a change in temperature.

What is Latent Heat and why is it important?

Latent is an important source of atmospheric energy as it causes the formation of rain. Latent heat is released when clouds are formed of water vapour. This heat warms the air around the newly formed cloud droplet and causes this air to be unstable so that this heat can leave the earth.

Is Latent Heat positive or negative?

Latent heat flux is the amount of energy moving from the surface to the air due to evaporation (positive values) or from the air to the land due to condensation (negative values).

Where does latent heat come from?

Latent heat is the energy absorbed by or released from a substance during a phase change from a gas to a liquid or a solid or vice versa.

What is the value of latent heat of vaporization at critical point?

now latent heat of vaporization means the amount of heat needed to change liquid state to vapour state, but in critical point vapour state and liquid state are co exist . so we can say the latent heat of vaporization at critical point is zero.