Standard reaction enthalpy vs standard enthalpy of formation

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Ashley McClearnen 1B
Posts: 59
Joined: Fri Sep 28, 2018 12:26 am

Standard reaction enthalpy vs standard enthalpy of formation

Postby Ashley McClearnen 1B » Sun Feb 10, 2019 5:42 pm

Can someone please explain the difference between standard reaction enthalpy and standard enthalpy of formation?

Iona Pay
Posts: 43
Joined: Fri Sep 28, 2018 12:15 am

Re: Standard reaction enthalpy vs standard enthalpy of formation

Postby Iona Pay » Sun Feb 10, 2019 5:57 pm

Standard reaction enthalpy (∆H°) is the ∆H that accompanies a change in system due to a chemical reaction where all reactants and products are in their standard states. Standard enthalpy of formation (∆H°f) is the ∆H during the formation of 1 mole of the substance, with all substances in the reaction in their standard states. Standard conditions are 273K, 100 kPa or 1 bar.

Elizabeth Kim 4E
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

Re: Standard reaction enthalpy vs standard enthalpy of formation

Postby Elizabeth Kim 4E » Mon Feb 11, 2019 12:10 pm

Standard reaction enthalpy is the enthalpy that occurs in a reaction and the SE of formation is during the formation of 1 mole of something


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