delta H

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Alexis Robles 2k
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Joined: Wed Sep 18, 2019 12:18 am

delta H

Postby Alexis Robles 2k » Sun Jan 26, 2020 10:17 pm

What is the difference between Standard reaction enthalpy and Standard enthalpy formation?

Ariana Iranmahboub1G
Posts: 114
Joined: Fri Aug 09, 2019 12:17 am

Re: delta H

Postby Ariana Iranmahboub1G » Sun Jan 26, 2020 10:21 pm

Standard Reaction Enthalpy is when all the reactants and products are in their standard state at 1 atm. Standard Enthalpy of Formation is the formation of one mole of a substance from its elements in their most stable state form.

Niharika 1H
Posts: 50
Joined: Thu Jul 25, 2019 12:16 am

Re: delta H

Postby Niharika 1H » Sun Jan 26, 2020 10:25 pm

The reaction enthalpy is the the enthalpy difference between the reactants and products, while the enthalpy of formation is the enthalpy change when a substance in the standard state is formed from its pure elements.

Long Luong 2H
Posts: 51
Joined: Thu Sep 19, 2019 12:16 am

Re: delta H

Postby Long Luong 2H » Sun Jan 26, 2020 11:19 pm

Standard reaction enthalpy is the change in the total heat of the system during a chemical reaction. The standard enthalpy of formation is the change in the total heat of the system from forming a compound from elements.


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