Delta H Nought vs Delta H

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Peter2715
Posts: 20
Joined: Fri Sep 25, 2015 3:00 am

Delta H Nought vs Delta H

Postby Peter2715 » Thu Jan 21, 2016 9:36 pm

Could somebody help explain to me the difference between Delta H Nought and Delta H? As well as whether these values are usually expressed in kj or kj/mol?

Lovelyn Edillo 4F
Posts: 15
Joined: Fri Sep 25, 2015 3:00 am

Re: Delta H Nought vs Delta H

Postby Lovelyn Edillo 4F » Thu Jan 21, 2016 11:43 pm

Delta H represents any change in enthalpy. Delta H nought specifically represents the standard change in enthalpy, meaning the change in enthalpy involved an equation under standard conditions. Standard conditions meaning the reactants and products are all in their standard physical and chemical state.

Chem_Mod
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Re: Delta H Nought vs Delta H

Postby Chem_Mod » Fri Jan 22, 2016 7:08 pm

Standard condition is at 1atm, 298K.

904608194
Posts: 8
Joined: Fri Sep 25, 2015 3:00 am

Re: Delta H Nought vs Delta H

Postby 904608194 » Fri Jan 22, 2016 7:58 pm

Both of these values would be expressed in kj/mol


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