14.3

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Gavin Kellerman 1D
Posts: 17
Joined: Sat Jul 09, 2016 3:00 am

14.3

Postby Gavin Kellerman 1D » Sat Feb 10, 2018 4:06 pm

Why are H20 and H+ not involved in the reduction reaction of Cl2 to Cl-, while they are for the reduction of MnO4- to Mn2+?

Tiffany Dao 1A
Posts: 32
Joined: Fri Sep 29, 2017 7:05 am

Re: 14.3

Postby Tiffany Dao 1A » Sat Feb 10, 2018 6:27 pm

Cl2 and Cl- don't have oxygen or hydrogen, so it's simply Cl2 + 2e- --> 2Cl-.
However, for MnO4- to Mn2+, there's the oxygen that is taken to form H2O.
MnO4- + 8H+ + 5e- --> Mn2+ + 4H20


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