Topic: Hydrogen peroxdie and water half-equation (Read 3001 times)

xtheunknown0 · « **on:** September 16, 2011, 09:39:34 PM »

Hello,

I'm considering H₂O₂(aq) + 2H⁺(aq) + 2e^-

2H₂O(l) (E⁰ = 1.77 V). How can water be better at pushing away electrons than water in O₂(g) + 4H⁺(aq) + 4e^-

2H₂O (E⁰ = 1.23 V)?

TIA,
xtheunknown0

Hunter2 · « **Reply #1 on:** September 18, 2011, 09:37:50 AM »

I think you have to compare the corresponded reaction.
Compare Permangante and Peroxide with copper and peroxide in acidic solutions

DevaDevil · « **Reply #2 on:** September 19, 2011, 12:01:29 PM »

Quote from: xtheunknown0 on September 16, 2011, 09:39:34 PM

Hello,

I'm considering H₂O₂(aq) + 2H⁺(aq) + 2e^- 2H₂O(l) (E⁰ = 1.77 V). How can water be better at pushing away electrons than water in O₂(g) + 4H⁺(aq) + 4e^- 2H₂O (E⁰ = 1.23 V)?

TIA,
xtheunknown0

I am confused about your question. Are you asking if water (on a Pt electrode) prefers to oxidize to oxygen or peroxide?

xtheunknown0 · « **Reply #3 on:** September 25, 2011, 06:06:33 PM »

DevaDevil · « **Reply #4 on:** September 26, 2011, 09:41:56 AM »

well, considering peroxide decomposes by itself into oxygen and water, what do you think is preferred?

xtheunknown0 · « **Reply #5 on:** October 02, 2011, 01:10:53 AM »

I don't understand what you're getting at.

Topic: Hydrogen peroxdie and water half-equation (Read 3001 times)

xtheunknown0

Hydrogen peroxdie and water half-equation

Hunter2

Re: Hydrogen peroxdie and water half-equation

DevaDevil

Re: Hydrogen peroxdie and water half-equation

xtheunknown0

Re: Hydrogen peroxdie and water half-equation

DevaDevil

Re: Hydrogen peroxdie and water half-equation

xtheunknown0

Re: Hydrogen peroxdie and water half-equation

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