Bond Enthalpies

Moderators: Chem_Mod, Chem_Admin

Delilah Naranjo dis 3j
Posts: 34
Joined: Wed Sep 21, 2016 3:00 pm

Bond Enthalpies

Postby Delilah Naranjo dis 3j » Sun Jan 29, 2017 10:08 pm

How do you know what bond breaks and which bond is formed?

kimberly_oka_2j
Posts: 9
Joined: Wed Sep 21, 2016 2:59 pm

Re: Bond Enthalpies

Postby kimberly_oka_2j » Sun Jan 29, 2017 10:32 pm

When in doubt, it is better to draw the lewis structure of the molecules involved in the reaction. By looking at the reactants and the products, you can clearly see which of the bonds are broken in the reactants and which of those broken bonds are rearranged in the products to be formed.

Maddy_Larson_2J
Posts: 23
Joined: Wed Sep 21, 2016 2:59 pm

Re: Bond Enthalpies

Postby Maddy_Larson_2J » Sun Jan 29, 2017 11:11 pm

If we are given the bond enthalpies for a molecule, but there is multiple moles of that molecule would we multiply the bond enthalpy by the number of moles? Thank you in advance!

Jessie_Chen_2L
Posts: 20
Joined: Wed Sep 21, 2016 2:59 pm

Re: Bond Enthalpies

Postby Jessie_Chen_2L » Mon Jan 30, 2017 9:24 am

Yes, you would multiply the bond enthalpies by the number of moles so that you can find the total amount required to break and form all the bonds.


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