September 25, 2020, 12:53:42 PM
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Topic: Nonsense redox?  (Read 264 times)

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Offline Marcos Castillo

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Nonsense redox?
« on: May 04, 2020, 03:23:56 AM »
Hello

Is it nonsense to point out and balance this reaction?

2e-+MnO2=>MnO3+OH-

My proposal is:

Valency +4:

2e-+MnO2+2H2O=>[H2MnO4]-2=>MnO3+2OH-

I cannot make sense and balance

I'm triyng to make sense of one paragraph of my texbook:

"The standard alkaline battery uses Zn and MnO2. KOH separates them. OH- ions react with Zn electrode to produce Zn(OH)2 and free electrons. These electrons move through an electrical circuit to return to the MnO2 electrode, where they react , to produce MnO3 and OH- ions. Both these chemical reactions produce a difference in potential voltage about 1,5V between both electrodes"

Thanks

Offline AWK

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Re: Nonsense redox?
« Reply #1 on: May 04, 2020, 03:46:19 AM »
AWK

Offline Marcos Castillo

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Re: Nonsense redox?
« Reply #2 on: May 04, 2020, 06:02:54 AM »
Thanks, AWK!

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