14.11

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Maria Trujillo 1L
Posts: 47
Joined: Fri Apr 06, 2018 11:05 am

14.11

Postby Maria Trujillo 1L » Wed Feb 27, 2019 8:21 pm

I am confused as to why we can use the reverse of the anode equation. When are we allowed to flip the half equations?

Katie Sy 1L
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

Re: 14.11

Postby Katie Sy 1L » Wed Feb 27, 2019 8:44 pm

you want to flip one of the half reactions so the electrons from each half reaction are able to cancel out. when you flip a half reaction, the sign of that cell potential will switch

Ian Marquez 2K
Posts: 66
Joined: Fri Sep 28, 2018 12:16 am
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Re: 14.11

Postby Ian Marquez 2K » Wed Feb 27, 2019 10:41 pm

Also, it is useful to refer to the equation that says Eºcell = Eºcathode - Eºanode. Since Eºcell should be positive, the more positive Eº should be denoted as the cathode and the other as the anode. Since it is - Eºanode, it is essentially flipped in this equation with all the elements switching sides.


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