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Balancing Rules for Redox Reactions

Posted: Tue Feb 26, 2019 2:50 pm
by Bianca Barcelo 4I
What are some general guidelines or rules to follow when balancing redox reactions?

Re: Balancing Rules for Redox Reactions

Posted: Tue Feb 26, 2019 3:17 pm
by Emily Ng_4C
Make sure the number of atoms and the charges are equal on both sides.

Re: Balancing Rules for Redox Reactions

Posted: Tue Feb 26, 2019 3:50 pm
by fgalasso1b
In acidic solutions, add H20 to balance oxygen atoms, and add H+ to balance hydrogen atoms.

Re: Balancing Rules for Redox Reactions

Posted: Tue Feb 26, 2019 3:51 pm
by Lynsea_Southwick_2K
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