What is the standard enthalpy of formation for Al2O3?
What is the standard enthalpy of formation for Al2O3?
The standard enthalpies of formation of Al2O3 and CaO are –1675 kJ mol–1 and –635 kJ mol–1 respectively.
What is the enthalpy change for the formation of 1 mole of aluminum oxide from its elements?
-1676 kJ/mol.
The heat of formation for aluminum oxide is -1676 kJ/mol.
What is the ΔH for the production of 1 mole of Al2O3 s )?
Problem: Consider the reaction 2 Al2O3(s) → 4 Al(s) + 3 O2. ΔH = +3339.6 kJ/mol What is ΔH for the formation of one mole of Al2O3(s) from the elements? 1. -679.2 kJ 2.
What is the enthalpy change of Aluminium?
Combining with the thermodynamic properties of related substances, the standard enthalpy of formation of aqueous aluminum ion, Al3+(aq), was obtained as −538.25 ± 1.00 kJ·mol−1.
What is the oxidation state of Al in Al2O3?
+3
One +3 oxidation state for Aluminum can be found in the compound aluminum oxide, Al2O3.
What is the standard enthalpy of Fe2O3?
824.2kJ/mol.
The standard heat of formation of Fe2O3(s) is 824.2kJ/mol.
What is the enthalpy change associated with the decomposition of Al2O3?
2Al(s) + 3/2 O2 (g) → Al2O3 (s) ΔH° = -1669.8 kJ/mol 2.
What is the enthalpy of formation for aluminum metal?
Inorganic substances
| Species | Phase | ΔfH⦵ /(kJ/mol) |
|---|---|---|
| Aluminium | Solid | 0 |
| Aluminium chloride | Solid | −705.63 |
| Aluminium oxide | Solid | −1675.5 |
| Aluminium hydroxide | Solid | −1277 |
What is the oxidation number of GA?
In most of its compounds, gallium has an oxidation state of +3 and, in a few, +1 (for example, the oxide, Ga2O)….gallium.
| atomic number | 31 |
|---|---|
| oxidation state | +3 |
| electron config. | [Ar]3d104s24p1 |
