Balancing number of electrons

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veneziaramirez 3I
Posts: 57
Joined: Fri Sep 29, 2017 7:07 am

Balancing number of electrons

Postby veneziaramirez 3I » Tue Feb 20, 2018 8:40 pm

To balance the number of electrons between the two half-reactions, we multiply each reaction by the least common multiple?

Jasmine Botello 2F
Posts: 67
Joined: Fri Sep 29, 2017 7:04 am

Re: Balancing number of electrons

Postby Jasmine Botello 2F » Tue Feb 20, 2018 8:44 pm

Yes because you want to make sure that the electrons cancel out when you write the final balanced redox reaction.

lindsay lathrop 2C
Posts: 29
Joined: Sat Jul 22, 2017 3:00 am

Re: Balancing number of electrons

Postby lindsay lathrop 2C » Sat Feb 24, 2018 4:16 pm

Yes, there is no need to go higher than the least common multiple because the sole goal is to just cancel them out. Furthermore, we want to keep the reaction as a whole in its simplest form as it is a representation, so to have extra molecules in this equation will be superfluous.

Jennifer Ho 1K
Posts: 31
Joined: Thu Jul 13, 2017 3:00 am

Re: Balancing number of electrons

Postby Jennifer Ho 1K » Sun Feb 25, 2018 7:21 pm

You can theoretically multiply the equations by any higher multiple as long as the electrons cancel out, but it's standard convention to have the coefficients in the final equation in their lowest whole number forms.

Ozhen Atoyan 1F
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Been upvoted: 1 time

Re: Balancing number of electrons

Postby Ozhen Atoyan 1F » Sun Feb 25, 2018 8:03 pm

I don't think it matters until the end. You can just divide all of them to make them as simple as possible.

Jaewoo Jo 2L
Posts: 31
Joined: Fri Sep 29, 2017 7:06 am

Re: Balancing number of electrons

Postby Jaewoo Jo 2L » Sun Feb 25, 2018 8:10 pm

Yes, you multiply by the least common multiple so you can get the electrons to cancel on both sides.

Veronica Rasmusen 2B
Posts: 49
Joined: Sat Jul 22, 2017 3:01 am

Re: Balancing number of electrons

Postby Veronica Rasmusen 2B » Mon Feb 26, 2018 10:32 pm

It would make most sense the multiply by the least common multiple so you won't have to do additional simplification at the end, however theoretically you could multiply by any multiple as long as the electrons cancel out

Caroline LaPlaca
Posts: 30
Joined: Sat Jul 22, 2017 3:01 am

Re: Balancing number of electrons

Postby Caroline LaPlaca » Tue Feb 27, 2018 1:27 am

You gotta make sure all the electrons are balanced.

Ashley Macabasco 2K
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Joined: Fri Sep 29, 2017 7:05 am

Re: Balancing number of electrons

Postby Ashley Macabasco 2K » Wed Feb 28, 2018 10:48 am

It does not matter what coefficient you use as long as the electrons cancel out in the end because you can always simplify the equations.

Emma Miltenberger 2I
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Joined: Thu Jul 27, 2017 3:00 am

Re: Balancing number of electrons

Postby Emma Miltenberger 2I » Wed Feb 28, 2018 2:31 pm

The electrons on the left side of the equation must cancel with the electrons on the right side of the equation. It is simplest to do this using the least common multiple. However, as long as the electrons cancel, you can use a higher multiple and then simplify the equation after.

Yea Eun Lee 1H
Posts: 33
Joined: Fri Sep 29, 2017 7:06 am

Re: Balancing number of electrons

Postby Yea Eun Lee 1H » Sun Mar 04, 2018 10:34 pm

It doesn't matter how you multiply as long as everything cancels out. However, it's most convenient to multiply by the least common factor


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