Difference between Bond Enthalpies & Standard Enthalpies of Formation

Moderators: Chem_Mod, Chem_Admin

Kevin Pham 2G
Posts: 12
Joined: Fri Jul 15, 2016 3:00 am

Difference between Bond Enthalpies & Standard Enthalpies of Formation

Postby Kevin Pham 2G » Sat Jan 14, 2017 8:59 pm

This question may have been asked, but I am new to Chemistry Community and am overwhelmed by all the posts on the forums. May someone please explain the difference between bond enthalpies and standard enthalpies of formation? For example, why is the bond enthalpy for F2 equal to 158 kJ/mol, but the standard enthalpy of formation for F2 is equal to 0? Thank you.

Chem_Mod
Posts: 18880
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 714 times

Re: Difference between Bond Enthalpies & Standard Enthalpies of Formation

Postby Chem_Mod » Sun Jan 15, 2017 6:33 pm

If you simply look in your book at pages 300 and 294, they define bond enthalpies and enthalpies of formation, respectively, in great detail. The course reader also has these definitions, as well as many other sources.


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

Who is online

Users browsing this forum: No registered users and 1 guest