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I tried an experiment of the Galvanic series and put three iron nails (slightly rusty, but brushed) into a copper sulphate solution and waited a few days until the nails get coated with copper.

Strangely something entirely different happened. The nails got almost dissolved, yet quite a bunch of residue added up.

I was not expecting this to happen. Could someone tell me what I did wrong? Thank you

Dissolved nail [1]

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    $\begingroup$ Displacement reaction occurred, but the copper would not automatically stick to the iron. I reckon that electroplating is needed to make them stick. $\endgroup$ – Kenny Lau May 16 '16 at 11:40
  • $\begingroup$ I got the instruction from that German page: netexperimente.de/chemie/118.html - but now did some research in the English parts of chemistry-pages. So far I couldn't find any information anything else would be required to make the reaction work (for example: schoollabs.wordpress.com/2013/02/23/iron-nails-copper-sulphate ) $\endgroup$ – Qohelet May 16 '16 at 11:53
  • $\begingroup$ Well, the video in the page is curious... it worked in the video? $\endgroup$ – Kenny Lau May 16 '16 at 11:55
  • $\begingroup$ @bon - which of my writings would you like to have formatted? $\endgroup$ – Qohelet May 16 '16 at 12:19
  • $\begingroup$ None in particular. I'm just putting it there for future reference. $\endgroup$ – bon May 16 '16 at 12:21

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