Half Reactions

Moderators: Chem_Mod, Chem_Admin

EthanPham_1G
Posts: 104
Joined: Sat Jul 20, 2019 12:17 am

Half Reactions

Postby EthanPham_1G » Tue Feb 18, 2020 2:33 pm

Why do we have to split the reaction into half reactions? What if there are many reactants and products that it needs more than two half-reactions?

Vicki Liu 2L
Posts: 101
Joined: Sat Aug 24, 2019 12:15 am

Re: Half Reactions

Postby Vicki Liu 2L » Tue Feb 18, 2020 3:32 pm

Splitting redox reactions into half reactions makes it easier to study what is going on. In the overall reaction, electrons are not included but when you separate it into half reactions, you can see more clearly which reactant donates and which loses electrons.
I don't think we would be given redox reactions that are too complex to be represented by two half reactions.

Caitlyn Tran 2E
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

Re: Half Reactions

Postby Caitlyn Tran 2E » Tue Feb 18, 2020 3:38 pm

We probably won't be given anything that needs to be split up into anything more than half reactions. After all, in redox reactions, something is oxidized and something is reduced, so one half reaction shows the oxidation and one half reaction shows the reduction. Hope this helps!

Paul Hage 2G
Posts: 105
Joined: Thu Jul 25, 2019 12:17 am

Re: Half Reactions

Postby Paul Hage 2G » Tue Feb 18, 2020 3:43 pm

Splitting the overall reaction into half reactions is also helpful when balancing redox reactions. This makes it easier to balance the H and the O atoms separately using H20 and H+ ions. It also helps to determine the total electrons needed to balance charges in the reaction.

BCaballero_4F
Posts: 94
Joined: Wed Nov 14, 2018 12:22 am

Re: Half Reactions

Postby BCaballero_4F » Tue Feb 18, 2020 4:25 pm

It is very helpful to split into half reactions when we are trying to balance them, so I think that is why

Maya Pakulski 1D
Posts: 105
Joined: Thu Jul 11, 2019 12:17 am

Re: Half Reactions

Postby Maya Pakulski 1D » Tue Feb 18, 2020 5:05 pm

Paul Hage 2G wrote:Splitting the overall reaction into half reactions is also helpful when balancing redox reactions. This makes it easier to balance the H and the O atoms separately using H20 and H+ ions. It also helps to determine the total electrons needed to balance charges in the reaction.


Is balancing the reaction the only reason to use redox reaction?

Eunice Nguyen 4I
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Half Reactions

Postby Eunice Nguyen 4I » Wed Feb 19, 2020 1:55 am

You split the reaction in half so that you can easily notice how many H+ and H2Os you'll need in order to balance the equation, plus the electrons. There should be the same amount of each on both sides after balancing.

Justin Sarquiz 2F
Posts: 106
Joined: Fri Aug 30, 2019 12:15 am

Re: Half Reactions

Postby Justin Sarquiz 2F » Wed Feb 19, 2020 8:31 am

Splitting the reaction into half reactions will be useful when we get to galvanic cells. The half reactions help determine which reaction is occurring in each container and help see what is occurring in the galvanic cell.


Return to “Balancing Redox Reactions”

Who is online

Users browsing this forum: No registered users and 2 guests