Balancing redox reactions in basic solutions

Moderators: Chem_Mod, Chem_Admin

Ashley Kenney 1E
Posts: 32
Joined: Wed Nov 14, 2018 12:23 am

Balancing redox reactions in basic solutions

Postby Ashley Kenney 1E » Sun Feb 24, 2019 5:15 pm

Is there a way to tell which side of the reaction the OH- and the H2O should go on or is it just a matter of trying both until the equation is balanced?

Ashe Chen 2C
Posts: 31
Joined: Mon Jan 07, 2019 8:23 am

Re: Balancing redox reactions in basic solutions

Postby Ashe Chen 2C » Sun Feb 24, 2019 5:26 pm

In acidic solution, balance O by using H2O and then balance H by using H+. In basic solution, balance O by using H2O; then balance H by adding H2O to the side of each half- reaction that needs H and adding OH- to the other side.

whitney_2C
Posts: 74
Joined: Fri Sep 28, 2018 12:28 am

Re: Balancing redox reactions in basic solutions

Postby whitney_2C » Sun Feb 24, 2019 6:07 pm

Here some steps for balancing redox reactions that I found helpful

1. Divide the equation into oxidation and reduction half reactions.
2. Balance all elements besides hydrogen and oxygen.
3. Balance O by adding H2O to the appropriate side of each equation.
4. Balance H by adding H+.
5. Balance the charge by adding electrons.
6. Multiply the half reactions to make the number of moles of electrons equal for both half-reactions. Why? So we can cancel out all electron and balance the charge.
7. Cancel out any common terms and recombine the two half reactions.
8. Check to make sure you get the overall reaction.


Return to “Balancing Redox Reactions”

Who is online

Users browsing this forum: No registered users and 0 guests