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basic
Posted: Tue Feb 26, 2019 3:27 pm
by jane_ni_2d
When balancing basic reactions, how can you tell how many -OH should be added?
Re: basic
Posted: Tue Feb 26, 2019 4:00 pm
by Chloe Thorpe 1J
It usually works to add the amount of H2O needed to one side and double the amount of OH- to the other side [e.g. you need 4 moles of oxygen: add 4 moles of H2O to one side and 8 moles of OH- to the other]. It just takes a lot of trial and error, for me, but it gets easier the more you do it!
Re: basic
Posted: Tue Feb 26, 2019 4:00 pm
by Chloe Thorpe 1J
7th edition 6K5 is a good practice problem for that.
Re: basic
Posted: Tue Feb 26, 2019 4:06 pm
by Lynsea_Southwick_2K
Basic solutions: balance O using H2O; then H using H2O to the side of each half rxn that needs H and then adding OH to the other side.
If there ends up being H2O on both sides you simplify