Enthalpy of Formation

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305174946
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Enthalpy of Formation

Postby 305174946 » Sun Feb 03, 2019 8:10 pm

So when calculating bond enthalpies the final answer will be an enthalpy of formation, correct? So I know that bond enthalpies are always positive, but the formation can be pos or neg based on if the number of reactants/products, right?

Tessa Lawler 1A
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

Re: Enthalpy of Formation

Postby Tessa Lawler 1A » Sun Feb 03, 2019 8:20 pm

Enthalpy of formation can be negative or positive, yes.

chris_tsai_4H
Posts: 52
Joined: Fri Sep 28, 2018 12:26 am

Re: Enthalpy of Formation

Postby chris_tsai_4H » Sun Feb 03, 2019 8:50 pm

Yes, bond enthalpy can be either positive or negative since the value is based on whether the formation of the bond requires or produces heat.


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