Heat Of Formation (Noun)
Meaning
The heat evolved or absorbed during the formation of one mole of a substance from its component elements.
Classification
Nouns denoting natural phenomena.
Examples
- The standard heat of formation of carbon dioxide is -393.5 kJ/mol, indicating a release of energy during its formation from carbon and oxygen.
- The heat of formation of ammonia is typically calculated at standard conditions, providing a useful measure of its stability relative to nitrogen and hydrogen.
- Standard enthalpies of formation are tabulated for many substances, facilitating the calculation of heat evolved or absorbed in various chemical reactions.
- Researchers calculated the heat of formation of the alloy to be 21.7 kJ/mol, providing valuable insight into its thermodynamic properties.
- Measuring the heat of formation of hydrogen peroxide involves combining hydrogen and oxygen under carefully controlled conditions.