It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements.
Helium – Specific Heat, Latent Heat of Fusion, Latent Heat of Vaporization
Specific heat of Helium is 5.193 J/g K.
Heat capacity is an extensive property of matter, meaning it is proportional to the size of the system. Heat capacity C has the unit of energy per degree or energy per kelvin. When expressing the same phenomenon as an intensive property, the heat capacity is divided by the amount of substance, mass, or volume, thus the quantity is independent of the size or extent of the sample.
Latent Heat of Fusion of Helium is 0.0138 kJ/mol.
Latent Heat of Vaporization of Helium is 0.0845 kJ/mol.
Latent heat is the amount of heat added to or removed from a substance to produce a change in phase. This energy breaks down the intermolecular attractive forces, and also must provide the energy necessary to expand the gas (the pΔV work). When latent heat is added, no temperature change occurs. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.
See also: Mechanical Properties of Helium
|Specific Heat||5.193 J/g K|
|Heat of Fusion||0.0138 kJ/mol|
|Heat of Vaporization||0.0845 kJ/mol|
Properties of other elements