H half rxns

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aisteles1G
Posts: 117
Joined: Fri Sep 28, 2018 12:15 am

H half rxns

Postby aisteles1G » Tue Feb 26, 2019 9:53 pm

i'm really confused on how to write out half rxns from a cell diagram that use H2 I HCL, in the book chapter there is an example and it writes it out as 1/2 H2--> H+ + e- but HCL isn't even incorporated into the half rxn? Do you always leave out the anion when dealing with hydrogen in an oxidation half reaction? Any help would be greatly appreciated, thanks!

MaanasO 1A
Posts: 72
Joined: Fri Sep 28, 2018 12:26 am

Re: H half rxns

Postby MaanasO 1A » Wed Feb 27, 2019 11:43 am

In this case, HCL completely dissolves into H+ and Cl-, so you can ignore the Cl- for the time being. That's why they only use H+.


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