mycotheologist
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Cleaning silver electrodes
I notice that silver electrodes eventually turn black. The black stuff must be silver oxide (AgO2). Silver oxide is a mild oxidising agent
so I tried soaking the electrodes in a solution of sodium metabisulfite (a reducing agent) but no reaction occurs. Would I have better luck by soaking
them in an acid?
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hissingnoise
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Most probably! Dilute HNO<sub>3</sub>, most likely . . .
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barley81
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Clean them like you clean tarnished silver in the kitchen: dissolve some baking soda in water, put an aluminum foil sheet in the solution, and then
drop in the silver. The aluminum reduces the silver compounds that are adhering to the silver.
@hissingnoise when did you stop being Pulverulescent?
[Edited on 6-5-2012 by barley81]
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phlogiston
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The black layer is usually silver sulfide actually. Silver does not tarnish in oxygen.
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"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer |
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