Balancing basic reactions

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Rhea Shah 2F
Posts: 97
Joined: Thu Jul 25, 2019 12:17 am

Balancing basic reactions

Postby Rhea Shah 2F » Sun Mar 08, 2020 8:05 pm

How do I know which side to add OH- to and which side to add H20 to?

SnehinRajkumar1L
Posts: 101
Joined: Thu Jul 11, 2019 12:15 am

Re: Balancing basic reactions

Postby SnehinRajkumar1L » Sun Mar 08, 2020 8:09 pm

Usually, you would add them to the side that needs oxygens. For example, reactions that involve MnO4 or Cr2O7, typically require the addition of water to the other side so that the number of oxygens are balanced. Use OH- when dealing with basic solutions. You would still add it to the side that needs oxygens to balance the equation appropriately.

Cavalli_1H
Posts: 92
Joined: Thu Sep 19, 2019 12:15 am

Re: Balancing basic reactions

Postby Cavalli_1H » Sun Mar 08, 2020 8:09 pm

for redox reactions you add them as needed on either side. depending on your method (there are several ways to do it), you'll most likely add OH- to sides that have an uneven charge or amount of O or H

Isabella Dal Porto 1H
Posts: 100
Joined: Fri Aug 30, 2019 12:16 am

Re: Balancing basic reactions

Postby Isabella Dal Porto 1H » Sun Mar 08, 2020 8:13 pm

I add H2O and OH- on the right side for reduction and then balance both sides by adding H2O to the other side. For oxidation, add H2O and OH- on the left and balance the number of H by adding H2O on the right. That's assuming you need to add any oxygens or hydrogens.

Dan M -3E
Posts: 101
Joined: Wed Sep 18, 2019 12:19 am

Re: Balancing basic reactions

Postby Dan M -3E » Sun Mar 08, 2020 10:35 pm

For a basic reaction, just analyze it and use OH- and H2O on either side and make sure that in the end, it is balanced.

Rohit Ghosh 4F
Posts: 99
Joined: Thu Jul 25, 2019 12:17 am

Re: Balancing basic reactions

Postby Rohit Ghosh 4F » Wed Mar 11, 2020 12:13 pm

As long as the charges and number of atoms are balanced, meaning that the number of atoms on one side equals the number of atoms on the other, the equations are balanced. OH- is only added in cases where the reaction takes place in a basic solution.

Nathan Nakaguchi 1G
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Re: Balancing basic reactions

Postby Nathan Nakaguchi 1G » Wed Mar 11, 2020 12:17 pm

For balancing basic reactions, add H2O's to balance oxygens, after that add H+'s to balance the hydrogens and finally, since this is basic, for every H+ you have added add that same amount of OH- onto both sides and note that OH-+H+=H2O, so there will be some cancelling.

Ellen Amico 2L
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Joined: Thu Sep 19, 2019 12:16 am

Re: Balancing basic reactions

Postby Ellen Amico 2L » Wed Mar 11, 2020 12:26 pm

You can also treat basic solutions like acidic ones by adding H+ and H2O as you would, and then add the same amount of OH- as the H+ (and add that amount of OH- to the other side as well). On the side where there's H+ and OH-, you can combine them to get H2O and then make sure the H2O is only on one side of the reaction.

Joanne Lee 1J
Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Re: Balancing basic reactions

Postby Joanne Lee 1J » Thu Mar 12, 2020 3:13 pm

You have to analyze the equations figure out which side needs OH- or H2O in order for the entire equation to be balanced.


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