Adding OH

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Joyce Gu 1E
Posts: 29
Joined: Tue Nov 24, 2015 3:00 am

Adding OH

Postby Joyce Gu 1E » Sat Mar 17, 2018 6:12 pm

When balancing redox reactions, how do you know when to add OH?

Tim Nguyen 2J
Posts: 31
Joined: Sat Jul 22, 2017 3:00 am

Re: Adding OH

Postby Tim Nguyen 2J » Sat Mar 17, 2018 6:25 pm

You only add OH when the redox reaction is in a basic solution

Justin Bui 2L
Posts: 51
Joined: Fri Sep 29, 2017 7:06 am

Re: Adding OH

Postby Justin Bui 2L » Sat Mar 17, 2018 7:01 pm

Yeah, for the whole shebang in a basic solution, you first balance O with H2O, also, you need to add H2O on the side that needs H, and then OH- on the opposite side

CalebBurns3L
Posts: 47
Joined: Fri Sep 29, 2017 7:07 am

Re: Adding OH

Postby CalebBurns3L » Sun Mar 18, 2018 8:28 pm

You will be adding OH- if its under basic conditions and H+ under acidic conditions.

Sarah Wax 1G
Posts: 29
Joined: Sat Jul 22, 2017 3:00 am

Re: Adding OH

Postby Sarah Wax 1G » Sun Mar 18, 2018 11:45 pm

Remember to always balance OH with H2O, otherwise the equation won't balance in the long run.

Sirajbir Sodhi 2K
Posts: 47
Joined: Sat Jul 22, 2017 3:00 am

Re: Adding OH

Postby Sirajbir Sodhi 2K » Sun Mar 18, 2018 11:47 pm

In basic solutions, you add OH-.

Kristin Ishaya 1A
Posts: 30
Joined: Fri Sep 29, 2017 7:04 am

Re: Adding OH

Postby Kristin Ishaya 1A » Tue Mar 20, 2018 1:50 am

You only add OH- when dealing with basic solutions. So, when balancing a basic solution, you start by adding H2O to balance the oxygens. Then you add H+ to balance the hydrogens. (This is where you would stop if it were an acidic solution.) Then you add OH- to balance the H+ (because you can't have H+ in a basic solution). So the H+ and the OH- combine to form H20 and then you cancel out any excess H20.


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