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Biology-Related Homework Help Cell Biology Topic started by: Buddy buddy on Sep 14, 2012



Title: What precipitate is formed when two iron nails are connected to a battery and put in a saline solution?
Post by: Buddy buddy on Sep 14, 2012
A billayer precipitate is formed: green at the botom, followed by an orange layer. The rest of the solution is colourless. I used fenolftalein as an indicator.


Title: What precipitate is formed when two iron nails are connected to a battery and put in a saline solution?
Post by: illestchemist on Sep 14, 2012
I think it is iron sulphate


Title: What precipitate is formed when two iron nails are connected to a battery and put in a saline solution?
Post by: oakhan on Sep 14, 2012
I think it may be Iron Oxide which is rust. the iron combines with the Oxygen in the water. and Iron III Chloride which is the green at the bottom.
cause running a current through water breaks up water into Hydrogen and Oxygen(electrolysis) the HCl also dissociates into their ions