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Emily Lo 1J
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Joined: Thu Sep 19, 2019 12:16 am


Postby Emily Lo 1J » Sun Jan 26, 2020 3:52 pm

Is there a relationship between the standard reaction enthalpy and the standard enthalpy of formation?

Kaitlyn Ang 1J
Posts: 116
Joined: Fri Aug 09, 2019 12:17 am
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Re: Enthalpies

Postby Kaitlyn Ang 1J » Sun Jan 26, 2020 3:59 pm

Standard enthalpy of formation () is the standard reaction enthalpy () to form one mole of the substance, which explains why the units for is kJ/mol
Last edited by Kaitlyn Ang 1J on Sun Jan 26, 2020 4:04 pm, edited 1 time in total.

Aman Sankineni 2L
Posts: 103
Joined: Fri Aug 30, 2019 12:17 am

Re: Enthalpies

Postby Aman Sankineni 2L » Sun Jan 26, 2020 4:02 pm

The standard enthalpy of formation is the change in enthalpy that accompanies the formation of one mole of the compound from its elements. The standard enthalpy of reaction occurs in a system when one mole of matter is transformed by a chemical reaction.

Ritu Gaikwad 2E
Posts: 52
Joined: Thu Jul 11, 2019 12:16 am

Re: Enthalpies

Postby Ritu Gaikwad 2E » Sun Jan 26, 2020 4:08 pm

The difference between standard reaction enthalpy and standard enthalpy of formation is that the standard enthalpy of formation is for a substance in its standard state (or in the element's most stable form) whereas standard reaction enthalpy by itself doesn't specific the phase of the substance.

Return to “Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)”

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