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Corrosion of Nails Experiment

I am a tertiary student in Singapore and have a question about corrosion of nails in ferroxyl indicating solution (the contents are NaCl, potassium_ferricyanide [affil links] and phenolphthalein [on eBay & Amazon] ). After the experiment, I found colour of greenish-blue and pink-red on the nails in the solution. What could have caused this situation? please advise... Thank you...

Thum Wee
Tertiary Student - Singapore
2004

That partly depends on what type of nail you were using, bright finish, electroplated, galvanized, bronze, brass, or something else? The end product depends on the sum of the reactants.

Marc Banks
- Elizabeth City, North Carolina
2004

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