Winter 2011 Final Exam- Q3A

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Winter 2011 Final Exam- Q3A

Postby 604807557 » Sun Mar 18, 2018 3:34 am

Q3A. Balance the following redox equation which takes place under basic conditions.
MnO2(s) + ClO-(aq) -> MnO4^2-(aq)+Cl-(aq)

How do I do this?

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Re: Winter 2011 Final Exam- Q3A

Postby Christiana2D » Sun Mar 18, 2018 3:56 am

First you write out the half-reactions.
MnO2(s) -> MnO4^2-(aq)
ClO-(aq) -> Cl-
Then you balance the elements Mn and Cl. Once they're balanced, you balance the O atoms using H2O and the H atoms using OH-. Then you balance the charges by adding electrons, multiple by factors until the amount of electrons being transferred for each half-reaction is equal, and add the reactions together.

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