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units for reaction enthalpy and enthalpy of formation

Posted: Sat Feb 01, 2020 12:44 pm
by Brian Tangsombatvisit 1C
I've seen kJ and kJ/mol being used interchangeably for both reaction enthalpy and enthalpy of formation, so are either units okay? Or does enthalpy of formation typically have units of kJ/mol and does reaction enthalpy typically have units of just kJ?

Re: units for reaction enthalpy and enthalpy of formation

Posted: Sat Feb 01, 2020 1:17 pm
by Mariana Fuentes 1L
I'm not too sure about my answer, but I believe that you can use them interchangeably.

Re: units for reaction enthalpy and enthalpy of formation

Posted: Sat Feb 01, 2020 2:55 pm
by Daniela Shatzki 2E
I think you can use both. If it just says kJ it usually means per mole unless otherwise stated.

Re: units for reaction enthalpy and enthalpy of formation

Posted: Mon Feb 03, 2020 10:28 am
by Abhi Vempati 2H
You can use both interchangeably. According to my TA (Dane), the per mol part simply clarifies that we are calculating the energy absorbed/release if the entire reaction occurred 1 mol times. Hope this helps!