Method of calculating

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Karina Kong 2H
Posts: 98
Joined: Thu Jul 25, 2019 12:16 am

Method of calculating

Postby Karina Kong 2H » Sun Jan 26, 2020 11:47 pm

Which method of calculating enthalpies is the most accurate?

Tanmay Singhal 1H
Posts: 143
Joined: Sat Jul 20, 2019 12:16 am

Re: Method of calculating

Postby Tanmay Singhal 1H » Sun Jan 26, 2020 11:48 pm

i think it might be the standard enthalpy of formation

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: Method of calculating

Postby Charisse Vu 1H » Sun Jan 26, 2020 11:51 pm

I believe using the standard reaction enthalpies would give you the most accurate answers. In the slides, it stated that if bond enthalpies are not available, then standard reaction enthalpies should be used.

Brianna Becerra 1B
Posts: 117
Joined: Fri Aug 02, 2019 12:16 am

Re: Method of calculating

Postby Brianna Becerra 1B » Mon Jan 27, 2020 1:15 pm

The least accurate of the methods is using bond enthalpies as the bonds which are not diatomic are just averages from many different molecules causing it to be a less accurate method. In lecture, it was not specified whether Hess's or the standard reaction enthalpies are more accurate however I assume you would just use the one which works with the information present.


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