thermodynamics, the standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance...
29 KB (1,880 words) - 09:26, 17 August 2024
standard enthalpy of reaction Δ H reaction ⊖ {\displaystyle \Delta H_{\text{reaction}}^{\ominus }} is related to the standard enthalpy of formation Δ...
16 KB (2,549 words) - 18:17, 30 August 2024
Enthalpy (/ˈɛnθəlpi/ ) is the sum of a thermodynamic system's internal energy and the product of its pressure and volume. It is a state function in thermodynamics...
48 KB (6,207 words) - 10:00, 25 September 2024
of Chemistry and Physics and the NIST JANAF tables. The NIST Chemistry WebBook (see link below) is an online resource that contains standard enthalpy...
9 KB (201 words) - 07:30, 9 April 2024
elemental metals, it is also equal to the standard enthalpy of formation of the gaseous metal atoms. The heat of sublimation is usually expressed in kJ/mol...
3 KB (152 words) - 03:51, 10 March 2024
salt. It is a special case of the enthalpy of reaction. It is defined as the energy released with the formation of 1 mole of water. When a reaction is...
3 KB (370 words) - 10:39, 2 December 2022
Hess's law (redirect from Hess's Law of Heat Summation)
compilation of standard enthalpies of formation, which may be used to predict the enthalpy change in complex synthesis. Hess’ law states that the change of enthalpy...
11 KB (1,408 words) - 04:46, 6 August 2024
stable than the thermodynamically stable black phosphorus. The standard enthalpy of formation of red phosphorus is −17.6 kJ/mol. Red phosphorus is kinetically...
13 KB (1,271 words) - 07:30, 1 September 2024
enthalpy, entropy, Gibbs free energy, and for many other material standards. The standard enthalpy change of formation for an element in its standard...
17 KB (2,067 words) - 17:21, 18 September 2024
Born–Haber cycle (category Pages that use a deprecated format of the chem tags)
calculate the lattice enthalpy by comparing the standard enthalpy change of formation of the ionic compound (from the elements) to the enthalpy required to make...
7 KB (941 words) - 22:25, 17 December 2023