Enthalpy units

[Rose_Malki_3G]

Are the units of ΔH⊖rxn always just Kj whereas the units of ΔH⊖f always Kj/mol?

[Nicole Huang 3F]

Yeah, the units of ΔH⊖f are always in kJ/mol, and ΔHrxn are always in kJ (no moles bc its a overall reaction total).

[Joshua Swift]

All enthalpy values will usually be given in kJ/mol unless it is for the overall reaction.

[Gillian Gabrielsen2F]

ΔHf is kJ/mol because it's the enthalpy required to form a mole of a particular substance. ΔHrxn is just the enthalpy of the overall reaction. Enthalpy is just a measure of the energy released/absorbed as heat while at a constant pressure, hence why kJ is used.

[Aayushi Jani 3A]

Yes, the units for ΔHf are kJ/mol while the units for ΔHrxn are just kJ (since it is representing the total of the overall reaction).

[Ariel Guan 1H]

ΔH⊖f is in kJ/mol
ΔHrxn is kJ

[Inderpal Singh 2L]

ΔHf is in kJ/mol and ΔHrxn is in kJ.

[Kyle Dizon 3A]

Yes the units will always be kj/mol unless it is the ΔH⊖rxn because that is the overall reaction of enthalpy.