How do we use the bond Enthalpies to calculate the reaction?

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huanglejun
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Joined: Fri Sep 25, 2015 3:00 am

How do we use the bond Enthalpies to calculate the reaction?

Postby huanglejun » Wed Jan 06, 2016 9:33 am

In order to form a C6H6, do we add 6 times Bond Enthalpies or just 1 times Bond Enthalpies?

Richmund Tan 1L
Posts: 25
Joined: Fri Sep 25, 2015 3:00 am

Re: How do we use the bond Enthalpies to calculate the react

Postby Richmund Tan 1L » Wed Jan 06, 2016 11:49 am

To calculate bond enthalpies we will need to calculate the delta H for the reaction. Since no equation was supplied, I'm not entirely sure what you are asking.
However, assuming that you are referring to calculating the bonds formed for C6H6, you will need to draw out the Lewis structure. From there, you can determine the number of C-H bonds and C double bonded to C and the number of C-C bonds. Then, you would multiply the number of bonds by the energy required per mol.

If the reaction equation requires only 1 mol of C6H6, you would only multiply by 1.

Hope this helps!


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