Balancing redox with h2o

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ursulavictorino1K
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Balancing redox with h2o

Postby ursulavictorino1K » Sun Mar 08, 2020 11:42 pm

How do you balance a redox equation using h2o, h+, and oh-?

Jasleen Kahlon
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Joined: Wed Nov 21, 2018 12:19 am

Re: Balancing redox with h2o

Postby Jasleen Kahlon » Sun Mar 08, 2020 11:46 pm

I was also wondering how this would be done, I've seen it done with H2O, H+, and OH- and other elements, but I don't know how it would be done with just these three...

Long Luong 2H
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Re: Balancing redox with h2o

Postby Long Luong 2H » Mon Mar 09, 2020 4:41 pm

In acidic solution, you’d use H2O and H+ to balance your redox reaction, because H+ ions are present in acidic solutions. In basic solutions, you’d use H2O and -OH to balance because there’s -OH ions in basic solution. The main idea of balancing redox reactions is to use a combination of H2O and H+/-OH to balance the equation.

CynthiaLy4F
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Re: Balancing redox with h2o

Postby CynthiaLy4F » Mon Mar 09, 2020 5:52 pm

If the reaction is under acidic conditions, you would balance the oxygen atoms with H2O and the hydrogen atoms with H+. If the reaction is under basic conditions, you would balance the oxygen and hydrogen atoms using H2O and OH-.

Rohit Ghosh 4F
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Re: Balancing redox with h2o

Postby Rohit Ghosh 4F » Mon Mar 09, 2020 8:48 pm

Yes, you can start by using H+ to balance out the electrons and negative charges on one side. If it is basic, then you have to add OH- to neutralize the H+, and make sure that the charges and atoms on one side of the reaction match the charge and atoms on the other side.

Jacob Motawakel
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Re: Balancing redox with h2o

Postby Jacob Motawakel » Tue Mar 10, 2020 1:17 am

you use h2o to balance the oxygens in your half reactions, then depending whether it is in an acidic or basic solution, you use h+ and oh- to balance the hydrogens in your half reactions. h+ for acidic solution, and oh- for basic solution.

Jialun Chen 4F
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Re: Balancing redox with h2o

Postby Jialun Chen 4F » Tue Mar 10, 2020 5:37 am

I'm quite sure that you use H+ and H2O for acidic reactions but OH- and H2O for basic reactions.

John Liang 2I
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Re: Balancing redox with h2o

Postby John Liang 2I » Tue Mar 10, 2020 10:39 am

With acidic conditions, use h2o to balance oxygens, and then H+ to balance the H of the h2o you just used.
With basic conditions, use h2o to balance oxygens like last time, then use another h2o to balance the hydrogens of the h2o, and finally OH- to balance the "another" h2o. hope this helps

ursulavictorino1K
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Joined: Sun Feb 17, 2019 12:15 am

Re: Balancing redox with h2o

Postby ursulavictorino1K » Tue Mar 17, 2020 12:45 am

So adding h2o, h3o+, and oh- balances the charge and elements or do you then have to add certain elements? Are you limited to just those 3?

Jiyoon_Hwang_2I
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Re: Balancing redox with h2o

Postby Jiyoon_Hwang_2I » Tue Mar 17, 2020 6:28 am

ursulavictorino1K wrote:So adding h2o, h3o+, and oh- balances the charge and elements or do you then have to add certain elements? Are you limited to just those 3?


If elements other than H and O need to be balanced in the equation you should use coefficients, but when you balance a redox reaction the only things being added directly to the reaction are H2O, H+, OH-


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