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Bond Enthalpies vs standard enthalpies of formation

Posted: Fri Jan 13, 2017 5:39 pm
by nick_pantoja_3G
What is the main clue on whether to use bond enthalpies vs standard enthalpies of formation in a problem to calculate the net enthalpy? I feel that both are similar and I'm not sure what to look for as in approaching the problem.

Re: Bond Enthalpies vs standard enthalpies of formation

Posted: Fri Jan 13, 2017 6:29 pm
by Chem_Mod
I would look at the data given to you. If you are given bond enthalpies, use bond enthalpies. If you are given heats of formation, use them.