Enthalpies of Reactions - Using Average Bond Enthalpies - Chemistry Tutorial

This tutorial covers how to calculate the enthaply of reaction for a given equation using average bond enthalpies. This tutorial gives several examples of how to calculate the enthalpy of a reaction by determining the number and types of bonds broken and formed and using the average bond enthalpies associated with those bonds.
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[@mariafonseca6358]

Wow thank you so much, i was looking for the nearest cliff, but you solved my problems, thank you

[@JimNagle87]

The voice of an angel :3

[@succeess23]

Sounds like Kim Kardashian is giving a Chemistry lesson. I can't get passed the voice. Damn you, ADD!!

[@lespaullover831]

Wow, I was struggling so much the way my professor taught me, and I was always making mistakes. But using this method of just going through all the bonds broken and made it is sooo much easier. Thank You!

[@NicoleClarkSwag]

nice, except 2096-2235 does not equal to -85. its -139. How do i get to -85??

[@Just1nFR]

Why is the final answer kj/mol when you are multiplying by the number of mols in the step in which you are calculating bonds broken and bonds formed. Would that not cancel out the Mols?

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[@TheChemistrySolution]

It's because it was 2096-2181.

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[@wannabeeish]

what would be the case if you wanted one mole of a polyatomic, but some diatomic atoms would have a coeffiecient?>

[@bazaldua350]

Thank You Very Helpful Videos Ever!

[@123reletive123]

Can someone PLEASE help me. Is Co2 C=O (and would it be x2 or x1) or O=C=O ( and would that be x4 or x2)

[@Wardog11111]

Yes CO2 is structured like 0=C=0. Use 2x the C=0 bond enthalpy as you are breaking (or forming) two of those bonds.

[@dabluedevil1000]

a gr8 tutorial.....thanx...u saved my life :)

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This is very good!, and your voice is beautiful.

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Better than KhanAcademy

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Thank youuuuu! helped loads :D

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[@numskull44]

very useful! thankx a lot :)

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great guide! but more importantly, you have a beautiful voice:)

[@artbridder]

thank you (: so very much!

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thanks, and such a pretty voice :)

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God ,that voice is soooo annoying !

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