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semiconductive
Hazard to Others
Posts: 326
Registered: 12-2-2017
Location: Scappoose Oregon, USA.
Member Is Offline
Mood: Explorative
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Here's the latest on the electroplating. Unfortunately, the solution broke down over several days releasing hydrogen and who knows what else.
The fluid level dropped enough that the washer came out of solution between weighings, so I can't make any conclusions of the efficiency (electrons
moved/grams iron or iron sulfide plated); So, I don't know how much acid I'm creating and re-etching the iron, vs. how much disappeared as gas
(electrolysis), vs. whats on the washer.
I'll have to re-do the experiment. 
But these photos show the typical color of a typical iron plate with insufficient sulfide to make it gold color. In general, Iron plates a light gray
when no sulfide is present, and anywhere from black (very magnetic) to golden (non-magnetic). Black plating occurs with oxygen or sulfide. The iron
is very reactive to oxidizers in solution.
 
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