Standard Reaction Enthalpy

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Alexis Robles 2k
Posts: 100
Joined: Wed Sep 18, 2019 12:18 am

Standard Reaction Enthalpy

Postby Alexis Robles 2k » Mon Feb 03, 2020 12:04 am

What is the difference between Standard Reaction Enthalpy and Standard Enthalpy of Formation? Thanks.

SnehinRajkumar1L
Posts: 101
Joined: Thu Jul 11, 2019 12:15 am

Re: Standard Reaction Enthalpy

Postby SnehinRajkumar1L » Mon Feb 03, 2020 12:09 am

Standard Reaction Enthalpy is the heat given off or taken up during reaction. Enthalpy of formation is difference between the standard enthalpies of products and reactants.

Althea Zhao 1B
Posts: 101
Joined: Mon Jun 17, 2019 7:24 am

Re: Standard Reaction Enthalpy

Postby Althea Zhao 1B » Mon Feb 03, 2020 12:54 am

Enthalpy of formation is the enthalpy of change between products and reactants; enthalpy of reaction is the difference.

805422680
Posts: 103
Joined: Sat Sep 14, 2019 12:16 am

Re: Standard Reaction Enthalpy

Postby 805422680 » Mon Feb 03, 2020 12:58 am

Enthalpy change of formation is the energy of reactants and products in their most stable state. Enthalpy change of reaction is the difference in those enthalpies

Gerald Bernal1I
Posts: 102
Joined: Thu Jul 11, 2019 12:16 am

Re: Standard Reaction Enthalpy

Postby Gerald Bernal1I » Mon Feb 03, 2020 12:59 am

The standard enthalpy of formation is the change in enthalpy when one mole of a substance in the standard state (1 atm of pressure and 298.15 K) is formed from its pure elements under the same conditions. The standard enthalpy of reaction takes these values and calculates the heat given off or taken up and can be used when the reactants and products are in their standard states.


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