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Topic: Electrodes  (Read 1901 times)

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Offline Violet89

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Electrodes
« on: April 21, 2013, 06:40:15 PM »
Consider the Figure shown in which X represent Zn(s), T represents Co(s), and S is a solution that is 1.0 M in Co2+.

At which electrode does reduction occur? The reduction potentials of Co2+ and Zn2+ are -0.27 V and -0.76 V, respectively.

Would it be T, since Co(s) reduces to Co2+?

Offline UG

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Re: Electrodes
« Reply #1 on: April 21, 2013, 07:49:33 PM »
Would it be T, since Co(s) reduces to Co2+?
What you have written isn't a reduction, its the other way round.
In general you can tell which species is going to be reduced just by looking at which has the more positive reduction potential.

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