What is the standard enthalpy of formation of gaseous water?
The Standard enthalpy of formation of gaseous H2O at 298K is -241.82 kJ mol-1.
What is the standard enthalpy of formation of H2O gas?
-286 kJ/mol
The standard enthalpy of formation of H2O (l) is -286 kJ/mol and the standard enthalpy of combustion of ethane is -1560 kJ/mol.
What is the standard formation of water?
Enthalpy of formation of liquid at standard conditions (nominally 298.15 K, 1 atm.)
| ΔfH°liquid (kJ/mol) | -285.830 ± 0.040 |
| Method | Review |
| Reference | Cox, Wagman, et al., 1984 |
| Comment | |
|---|---|
| CODATA Review value |
What is enthalpy formation of water Vapour?
Molar Enthalpy of Formation of Various Substances
| Substance | Formula | hfo [kJ/kmol] |
|---|---|---|
| Water Vapor | H2O(g) | -241,820 |
| Water | H2O(l) | -285,820 |
| Hydrogen peroxide | H2O2(g) | -136,310 |
| Ammonia | NH3(g) | -46,190 |
What is the correct reaction equation and enthalpy for the formation of water vapor?
H2(g)+12O2(g)→H2O(l)+ΔH∘f .
How do you find the standard enthalpy of reaction formation?
This equation essentially states that the standard enthalpy change of formation is equal to the sum of the standard enthalpies of formation of the products minus the sum of the standard enthalpies of formation of the reactants. and the standard enthalpy of formation values: ΔH fo[A] = 433 KJ/mol. ΔH fo[B] = -256 KJ/mol.
What is the delta H for water?
Selected ATcT enthalpy of formation based on version 1.118 of the Thermochemical Network
| Species Name | Formula | ΔfH°(298.15 K) |
|---|---|---|
| Water | H2O (cr, eq.press.) | -292.740 |
Which equation represents the standard enthalpy change of formation of water?
2H2(g)+O2(g)→2H2O(l)
What is the thermochemical equation for the formation of water?
H2O
Selected ATcT enthalpy of formation based on version 1.118 of the Thermochemical Network
| Species Name | Formula | ΔfH°(298.15 K) |
|---|---|---|
| Water | H2O (cr, eq.press.) | -292.740 |
What is standard formation reaction?
A chemical reaction in which one mole of a substance in its standard state. is made from it’s elements in their standard states.