Cfrgtkky

What are the differences between specific latent heat and latent heat?

As far as I know, latent heat is the heat required or released during the change of state, without change of temperature. So what does specific latent heat mean? Are they the different? If yes, what does the term 'specific' contribute?

In this context the word specific means per unit mass.

So if a lump of ice has a specific heat, the specific latent heat of ice is the latent heat of the lump of ice divided by the mass of the ice.

In the same way if a lump of copper has a heat capacity then the specific heat capacity of copper is the heat capacity of the lump of copper divided by the mass of copper.

In the field of electricity you might refer to the charge of an electron $e$ and the specific charge of an electron $frac em$.

the specific latent heat means the latent heat per unit mass of the substance in question.

According to the international standard ISO 80000-1 – Quantities and units, (which includes the quantities used as the basis of the units of the SI), the term “specific” is defined as follows:

The adjective “specific” is added to the name of a quantity to indicate the quotient of that quantity by mass.

A similar definition can be found in IUPAC Quantities, Units and Symbols in Physical Chemistry (Green Book):

The adjective specific before the name of an extensive quantity is used to mean divided by mass.

For example, specific heat capacity $c$ is defined as heat capacity $C$ divided by mass $m$.

Likewise, the specific latent heat of vaporization, i.e. the specific enthalpy of vaporization $Delta_text{vap}h$ is defined as enthalpy of vaporization $Delta_text{vap}H$ divided by mass $m$. For example, the specific enthalpy of vaporization of water at a pressure of $p=1 mathrm{bar}$ is $Delta_text{vap}h=2257.4 mathrm{kJ kg^{-1}}$.

Note that a quantity defined as A/B is called ‘quotient of A by B’ or ‘A per B’, but not ‘A per unit B’ (contrary to some other answers).

Concepts

latent heat - During the process of melting of the temperature remains constant the amount of heat needed to melt a solid of mass M maybe Written as q=mL L constant for a given material and surrounding condition L is called a specific latent heat of fusion/vaporisation the term latent heat of fusion/vapourization is also used to mean the same thing

so basically heat required to cause change of state when ice is kept at temperature above 0 it doesn’t instantaneously melt but absorbs the heat from sourounding and changes to liquid phase same thing is true when water is converted to ice the heat is given out .. so you can think of latent heat as hidden heat

Answer to your question

So they are little different
Latent heat is simply amount heat absorbed/ released when an substance changes its state
This is kind of vague to overcome this we define specific heat which helpful in quantitative analysis

Specific latent heat
The term specific refers to “per unit mass” in your

So now it become “amount of heat required per unit mass of substance to cause change of state
hope this helps

Source =>concepts of physics by HC Verma.