latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature . ... The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of the substance undergoing a change of state.
What is latent heat Short answer?
Latent heat is defined as the heat or energy that is absorbed or released during a phase change of a substance . It could either be from a gas to a liquid or liquid to solid and vice versa. Latent heat is related to a heat property called enthalpy.
What is latent heat?
latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature . ... The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of the substance undergoing a change of state.
What is latent heat Class 11?
Latent heat of a substance is the amount of heat energy required to change the state of unit mass of the substance from solid to liquid or from liquid to gas/vapour without any change in temperature .
What do you mean by latent heat explain with example?
Latent heat of the solid means that amount of heat energy absorbed when 1 kg of a substance changes from solid to liquid at its melting point is called latent heat of fusion of the solid. example : Change if ice into water requires a certain heat level so, that it can broke its compactly arranged particles.
What are two types of latent heat?
Two common forms of latent heat are latent heat of fusion (melting) and latent heat of vaporization (boiling) . These names describe the direction of energy flow when changing from one phase to the next: from solid to liquid, and liquid to gas.
What are three types of latent heat?
- Latent Heat of Fusion,
- Latent Heat of Vaporization,
- Latent Heat of Sublimation.
Why it is 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 .
Can you feel latent heat?
If it condenses on its own, it will give off (sensible) heat and get warmer. Therefore sensible heat can be felt while latent heat is the type of heat that cannot be felt .
What is latent heat Class 9?
The heat energy which has to be supplied to change the state of a substance is called its latent heat. Latent heat does not raise (or increase) the temperature. But latent heat has always to be supplied to change the state of a substance .
What is the latent heat for melting?
A total of 334 J of energy are required to melt 1 g of ice at 0°C , which is called the latent heat of melting. At 0°C, liquid water has 334 J g − 1 more energy than ice at the same temperature. This energy is released when the liquid water subsequently freezes, and it is called the latent heat of fusion.
What is matter in physics class 11?
Anything that has mass and occupies space is called matter. A matter is made up of tiny particles.
Why is latent heat important?
Latent heat is an important source of energy in the development of thunderstorms and hurricanes . Water vapor strongly absorbs infrared radiation, making it an important gas in the Earth’s heat-energy balance. In fact water vapor is the largest contributor to the greenhouse effect on Earth.
What is latent heat of vaporization explain with example?
2) latent heat of vaporisation – It is the amount of heat energy req . to convert 1 kg of liquid to gasous form at its boiling point. For eg – water evaporates into vapour at 100′ c.
What is latent heat of fusion?
The amount of heat required to convert one unit amount of substance from the solid phase to the liquid phase — leaving the temperature of the system unaltered — is known as the latent heat of fusion.
