Law Constant Proportion

Latent heat of fusion is the amount of inner or latent heat that a solid gains (melting) in order to transform into a liquid state or to transform from a liquid state to a gaseous state, respectively (boiling).

The term “latent heat” refers to the energy required to change the state of an object. Fusion is the term for combining two or more things.

 In general, latent heat of fusion refers to the additional energy or heat that causes an object to change from one state to another. 

It is about the transformation of a solid into a liquid, which is known as melting, and the transformation of a liquid into a gaseous state, which is known as the boiling process.

In order to convert one kilogramme of ice to water, the latent heat of fusion of water (1 kg) must be provided. This amount of heat must be provided even if the surrounding environment does not change in temperature. This is kept at a temperature of zero degrees Celsius.

Heat and Temperature 

In the chapter on Thermodynamics, the parameter heat is represented by the English block letter Q.

 We frequently confuse the terms  heat  and temperature,but there are significant differences between the two terms. 

Heat is the result of an object causing vibrations in the particles contained within the object to occur. 

We also consider heat to be the increase in entropy of particles or the increase in kinetic energy of particles as a result of increasing temperatures. 

Temperature is something that can be both high and low at the same time, whereas heat is constantly increasing. 

The Gibbs  free energy state is reached by the body when heat is latent, as when you sleep, for example, because your body loses heat and the temperature of your body falls during sleep.

Formula for the Latent Heat of Fusion

The formula for latent heat of fusion is given by ∆ Q = mL, which is the equation for latent heat of fusion that is necessary.

∆Q = change in heat energy in Joules  

m = mass in kilogrammes

 L = Specific latent heat of fusion is calculated as follows:

Specific latent heat of fusion

The Specific Latent Heat of Fusion is a measure of the amount of heat that can be generated by fusion.

The specific latent heat is defined as the amount of energy required to transform or change the state of one kilogramme of a substance.

The specific latent heat of fusion, on the other hand, is the amount of energy required to melt one kilogramme of matter. 

The specific latent heat of vaporisation is another term that can be used to describe this phenomenon. 

When we talk about specific latent heat of vaporisation, we are talking about the amount of energy required to boil or evaporate one kilogramme of a substance.

Formula for the Specific Latent Heat of Fusion

It is given by:  Q = mL, which is the required specific latent heat of fusion equation, that we can derive the formula for specific latent heat of fusion.

Equation of Specific Latent Heat of Fusion

We can define the specific latent heat of the fusion equation as follows:

If m  kg of a solid substance changes to a liquid state at a constant temperature, which is the melting point of the substance, the heat absorbed by the substance, or the latent heat of fusion formula is

Q = mL

Where,L is the specific latent heat of fusion of the substance, which is measured in Joule per kilogramme or J/kg

Due to the fact that sea ice and brine can exist together at any temperature and melt at any temperature other than 0°C when bathed in a concentrated salt solution, 

In the case of sea ice, the amount of latent heat present is complicated.

This is similar to what occurs in the walls of brine cells when brine cells migration occurs. 

If m kg of solid converts to a fluid at a constant temperature equal to its melting point, the heat consumed by the substance, which is expressed by the latent heat of fusion formula, is as follows:

Q = m L is a mathematical formula.

Wherein

L is the specific latent heat of fusion of a substance (in degrees Celsius).

When the temperature of the substance changes from t1 (low temperature) to t2 (high temperature), the amount of heat that the substance absorbs or releases is denoted by the symbol

Q = mc∆t is a mathematical formula.

Q = mc (t2 – t1) (t2 – t1)

The total amount of heat absorbed or released by the material is measured in kilocalories.

In this equation, Q = L + mc∆t

Conclusion

The transformation of matter from one state to another is caused by latent heat, which is heat that is not visible. 

The specific latent heat of fusion is the amount of energy required to raise 1 kg in weight. 

Both are measured in joules per kilogramme of body weight.

In addition to being known as latent heat of fusion, the term enthalpy of fusion refers to the amount of energy required to be supplied to a solid substance in the form of heat in order to bring about a change in its original physical state and then convert it into a liquid state. 

The pressure of the surrounding environment is maintained constant while the substance is in the liquid state.

Let us use an example-

In order to convert one kilogramme of ice to water, the latent heat of fusion of water (1 kg) must be provided. 

This amount of heat must be provided even if the surrounding environment does not change in temperature.

This is kept at a temperature of zero degrees Celsius.