Enthalpy of sublimation

The enthalpy of sublimation, or heat of sublimation, is the heat required to change one mole of a substance from solid state to gaseous state at a given combination of temperature and pressure, usually standard temperature and pressure (STP). The heat of sublimation is usually expressed in kJ/mol, although the less customary kJ/kg is also encountered.

Sublimation enthalpies

symbol	substances	Sublimation enthalpy (kJ/mol)
Na	sodium	108
K	potassium	89
Rb	rubidium	82
Cs	caesium	78
Mg	magnesium	150
Ca	calcium	192
Sr	strontium	164
Ba	barium	176
I2	iodine	62.4[1]
C10H8	naphthalene	72.9[1]
CO2	carbon dioxide	25[1]

See also

• Heat
• Sublimation (chemistry)
• Phase transition
• Clausius-Clapeyron equation

References

1. Chickos, James S.; Acree, William E. (2002). "Enthalpies of Sublimation of Organic and Organometallic Compounds. 1910–2001". Journal of Physical and Chemical Reference Data. 31 (2): 537–698. doi:10.1063/1.1475333. ISSN 0047-2689.