Standard E values and inverse values

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Mary Becerra 2D
Posts: 53
Joined: Fri Sep 29, 2017 7:06 am

Standard E values and inverse values

Postby Mary Becerra 2D » Thu Feb 22, 2018 2:44 pm

If we have a hypothetical A ---> B E= 123, does that mean that B ---> A E= -123?

Jessica Yang 1J
Posts: 55
Joined: Fri Sep 29, 2017 7:03 am

Re: Standard E values and inverse values

Postby Jessica Yang 1J » Thu Feb 22, 2018 3:32 pm

E is an intensive property so I think that E (red) will stay the same regardless. However, when approaching problems to solve for E(cell), I found this earlier post that explains it quite well, because I know Dr. Lavelle went over calculating E (cell) in two ways.

viewtopic.php?t=5188

I hope this helps you out

Sarah Maraach 2K
Posts: 31
Joined: Thu Jul 27, 2017 3:00 am

Re: Standard E values and inverse values

Postby Sarah Maraach 2K » Sun Feb 25, 2018 10:54 pm

E is the reduction potential of an atom, so if A --> B is reduction and B --> A is the same atom but getting oxidized, then E would be negative. But if A --> B is a reaction, then E shouldn't change since it is not a state property such as enthalpy.


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