Balancing Rules for Redox Reactions

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Bianca Barcelo 4I
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Joined: Fri Sep 28, 2018 12:17 am
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Balancing Rules for Redox Reactions

Postby Bianca Barcelo 4I » Tue Feb 26, 2019 2:50 pm

What are some general guidelines or rules to follow when balancing redox reactions?

Emily Ng_4C
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: Balancing Rules for Redox Reactions

Postby Emily Ng_4C » Tue Feb 26, 2019 3:17 pm

Make sure the number of atoms and the charges are equal on both sides.

fgalasso1b
Posts: 32
Joined: Wed Oct 03, 2018 12:15 am

Re: Balancing Rules for Redox Reactions

Postby fgalasso1b » Tue Feb 26, 2019 3:50 pm

In acidic solutions, add H20 to balance oxygen atoms, and add H+ to balance hydrogen atoms.

Lynsea_Southwick_2K
Posts: 55
Joined: Fri Sep 28, 2018 12:25 am

Re: Balancing Rules for Redox Reactions

Postby Lynsea_Southwick_2K » Tue Feb 26, 2019 3:51 pm

Step 1: identify whats being oxidized/reduced
(Oxidation: Loss of e- → reducing agent, Reduction: Gain of e- → oxidizing agent)
Step 2: write the 2 skeletal, unbalanced equations
Step 3: balance all except O and H
Step 4:
Acidic solutions: balance O by using H2O, then H using H+
Basic solutions: balance O using H2O; then H using H2O to the side of each half rxn that needs H and adding OH to the other side
Step 5: add electrons
(Left for reductions, Right for oxidations)
Step 6: multiply to get same e- for both half rxn, add/simplify rxns


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