The melting point of hydrogen is -259,14 0C.
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The interval between the beginning of liquefaction and complete liquefaction
It is its boiling point, or 90.20 K, -182.95 °C, and -297.31 °F.
The melting point is also called the liquefaction point or the fusion point.
This temperature is called condensation or liquefaction point.
Ammonia (NH3) is easily liquefied compared to hydrogen chloride (HCl) because ammonia has weaker intermolecular forces (hydrogen bonding) compared to the strong dipole-dipole interactions in hydrogen chloride. Weaker intermolecular forces result in easier liquefaction of the gas.
To exist as a liquid, H2 must be cooled below hydrogen's critical point of 33 K. However, for hydrogen to be in a full liquid state without evaporating at atmospheric pressure, it needs to be cooled to 20.28 K.Wikipedia
they may be separated by Liquefaction, but traces of CO from mixture are separated by passing through concentrated solution of NaOH.
Liquefaction is a noun.
The biliong point of hydrogen is -252,87 0C. The melting point of hydrogen is -259,14 0C.
The temperature must be below the critical point and the phase can change to liquid by cooling the gas. If the gas is at conditions of temp and pressure below the triple point, the gas will instead be converted to a solid.
Melting point is the temperature at which a solid substance changes to a liquid state. It is sometimes also called the liquefaction point.