8.51

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Alexandria Weinberger
Posts: 51
Joined: Fri Sep 29, 2017 7:03 am

8.51

Postby Alexandria Weinberger » Thu Jan 11, 2018 10:25 pm

When finding the enthalpy of the reaction, why are the individual enthalpies for N2 and O2 not included in the calculation?

Cam Bear 2F
Posts: 60
Joined: Thu Jul 27, 2017 3:01 am

Re: 8.51

Postby Cam Bear 2F » Thu Jan 11, 2018 10:55 pm

N2 and O2 are in their most stable form so their enthalpies of formation are zero.

Michael Cheng 1C
Posts: 51
Joined: Thu Jul 13, 2017 3:00 am

Re: 8.51

Postby Michael Cheng 1C » Fri Jan 12, 2018 12:13 am

so when finding the enthalpy of reaction, is it just the sum of enthalpy of formation of products - sum of enthalpy of formation of reactants?

Cam Bear 2F
Posts: 60
Joined: Thu Jul 27, 2017 3:01 am

Re: 8.51

Postby Cam Bear 2F » Fri Jan 12, 2018 12:46 am

Don't forget to multiply by the moles

Which is the energy per mole of reaction


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