bond enthalpy equations
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 30
- Joined: Tue Nov 14, 2017 3:02 am
bond enthalpy equations
What are the steps to help solve bond enthalpy equations? I'm having a hard time understanding.
-
- Posts: 16
- Joined: Wed Nov 14, 2018 12:23 am
Re: bond enthalpy equations
If by solving bond enthalpy equations you mean using bond enthalpies to find the enthalpy of a reaction then you want to first find out which bonds are being broken and which are being formed. Then you sum the enthalpies of the breaking bonds and the forming bonds separately. Then you subtract the sum of the formed bonds from the broken bonds.
-
- Posts: 60
- Joined: Fri Sep 28, 2018 12:29 am
Re: bond enthalpy equations
Bond enthalpy is defined as the amount of energy required to break a bond. You can calculate bond enthalpy of a reaction by subtracting the total bond enthalpies of products from the total bond enthalpies of reactants.
-
- Posts: 53
- Joined: Fri Sep 28, 2018 12:28 am
Re: bond enthalpy equations
When solving for the enthalpy of a reaction, how do you know which bonds are supposed to be broken?
-
- Posts: 59
- Joined: Fri Apr 06, 2018 11:04 am
Re: bond enthalpy equations
I believe Dr.Lavelle drew out the structure of each reactant and product in order to help us visualize which bonds were being broken.
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:27 am
Re: bond enthalpy equations
In order to see which bonds are being broken, you can draw out the structures and see which ones would need to break in order to form the new structure. However, I think you can also just subtract the energy needed to break all the bonds from the energy released from forming all the bonds, which might be easier.
-
- Posts: 66
- Joined: Fri Sep 28, 2018 12:28 am
Who is online
Users browsing this forum: No registered users and 6 guests