The specific latent heat (L) of a material… is a measure of the heat energy (Q) per mass (m) released or absorbed during a phase change. is defined through the formula
Q = mL.
is often just called the “latent heat” of the material.
What is the formula for calculating latent heat of fusion?
The
formula
of
specific latent heat of fusion
is given by: Q = mL, which is the required
specific latent heat of fusion equation
.
What is specific latent heat formula?
Here is the formula:
E
h
= m x l
.
E
h
means energy, equals m for mass, times l. l is the specific latent heat of fusion for that material. So the formula tells us how much heat energy is needed to go into a material to change it from a solid to a melted liquid.
How do you calculate latent heat from mass?
- m [kg] is the mass of the body,
- L [kJ/kg] is the specific latent heat,
- Q [kJ] is the heat absorbed or released depending on the direction of the transition.
What is the unit for latent heat?
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 are the types of latent heat?
- Latent Heat of Fusion,
- Latent Heat of Vaporization,
- Latent Heat of Sublimation.
What is latent heat of vaporisation Class 9?
The term latent heat of vaporisation can be defined as
the amount of heat needed for the conversion of 1kg of liquid at its boiling point to gas at same temperature
. It differs among different liquids.
How much is the latent heat of fusion?
The heat of fusion for water at 0 °C is
approximately 334 joules (79.7 calories) per gram
, and theheat of vaporization at 100 °C is about 2,230 joules (533 calories) per gram.
What are the units of specific heat and latent heat?
Specific latent heat
Q is the amount of energy released or absorbed during the change of phase of the substance (in
kJ or in BTU
), m is the mass of the substance (in kg or in lb), and. L is the specific latent heat for a particular substance (kJ kg
− 1
or in BTU lb
− 1
), either L
f
for fusion, or L
v
for vaporization.
What is the specific latent heat of water?
| Substance Specific latent heat of fusion (kJ/kg) Specific latent heat of vaporisation (kJ/kg) | Water 334 2,260 | Lead 22.4 855 | Oxygen 13.9 213 |
|---|
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 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 of vaporization in physics?
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.
What is latent heat of fusion with example?
For example, the latent heat of fusion of
one kilogram of water
, which is the amount of heat energy that must be supplied to convert 1 kg of ice without changing the temperature of the environment (which is kept at zero degrees celsius) is 333.55 kilojoules.
What is specific latent heat of fusion?
Specific latent heat of fusion is defined as
the quantity of heat required to convert a unit mass of the substance from solid to liquid state at its melting point
and the specific latent heat of vaporization is defined as the quantity of heat required to convert a unit mass of the substance from liquid to gaseous state …
