14.9


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Emma Ward 2C
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Joined: Fri Sep 29, 2017 7:05 am

14.9

Postby Emma Ward 2C » Mon Feb 19, 2018 3:00 pm

Can someone show how for problem b, n=6??

Emily Mei 1B
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

Re: 14.9

Postby Emily Mei 1B » Mon Feb 19, 2018 3:06 pm

Half reactions have 6 electrons, which is 6 mols of electrons, so n=6.
Red: 6Fe3+ + 6e- --> 6Fe2+
Ox: 2Cr3+ --> Cr2O7 2- + 6e-


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