Standard Enthalpy of Formation

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Ryan Fang 1D
Posts: 53
Joined: Sat Jul 22, 2017 3:00 am

Standard Enthalpy of Formation

Postby Ryan Fang 1D » Sat Jan 20, 2018 1:50 pm

How do you tell what is a standard enthalpy of formation?

Zane Mills 1E
Posts: 80
Joined: Fri Sep 25, 2015 3:00 am
Been upvoted: 1 time

Re: Standard Enthalpy of Formation

Postby Zane Mills 1E » Sat Jan 20, 2018 1:53 pm

This is just the change in enthalpy of one mol of the substance in standard state. Standard state just means at 1atm of pressure and 298K from its 'pure' elements.

Susie Lee 2I
Posts: 20
Joined: Fri Sep 29, 2017 7:05 am

Re: Standard Enthalpy of Formation

Postby Susie Lee 2I » Sat Jan 20, 2018 4:45 pm

Standard enthalpy of formation of an element in its most stable form is zero.

Phillip Tran
Posts: 54
Joined: Thu Jul 13, 2017 3:00 am

Re: Standard Enthalpy of Formation

Postby Phillip Tran » Sat Jan 20, 2018 5:40 pm

standard enthalpy of formation is the enthalpy for a single mol compared to say a reaction enthalpy where it is an enthalpy of a whole reaction

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

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