What is latent heat evaporation?
Latent heat of evaporation is the energy used to change liquid to vapor. IMPORTANT: The temperature does not change during this process, so heat added goes directly into changing the state of the substance.
What is latent heat of evaporation give 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 happens to latent heat during evaporation?
Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process. If the vapor then condenses to a liquid on a surface, then the vapor’s latent energy absorbed during evaporation is released as the liquid’s sensible heat onto the surface.
What is latent heat of vaporization for class 9th?
Latent heat of vaporization is the heat consumed or discharged when matter disintegrates, changing stage from fluid to gas stage at a consistent temperature.
What is latent heat in geography?
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. For example, when water is boiled over a stove, energy is absorbed from the heating element and goes into expanding the water molecules into a gas, known as water vapor.
What is meant by latent heat and latent heat of evaporation?
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 is latent heat in Brainly?
Brainly User. Answer: the heat required to convert a solid into a liquid or vapour, or a liquid into a vapour, without change of temperature.
Why is latent heat called so?
The latent heats are the amount of heat energy needed by a compound to change its state. They are called latent because there are no temperature differences observed. The latent heat exists whenever a compound changes its state. When it goes from solid to liquid it is called the latent heat of fusion.
What is Latent 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. The heat of vaporization of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol.
What is latent heat of vaporization short answer?
Similarly, the latent heat of vaporization or evaporation (Lv) is the heat that has to be given to a unit mass of material to convert it from the liquid to the vapor phase without a change in temperature.
What is meant by specific latent heat?
Specific latent heat is the amount of energy required to change the state of 1 kilogram (kg) of a material without changing its temperature. latent heat of fusion – the amount of energy needed to melt orfreeze the material at its melting point.
What is latent heat ans?
Explanation. The latent heat of a substance is defined as the amount of heat energy required to change the state of a unit mass of the substance without any temperature change.