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<p>[QUOTE=&quot;Cherd, post: 1467327, member: 24754&quot;]I placed the coin in a baking soda solution with some aluminum foil. The reaction is electrochemical, but it is not electrolysis (no current was applied). The reaction that occurs results in breaking of the sulfer-oxygen bonds in silver oxide and formation of aluminum oxide. As far as the coin surface goes, the result brought about by dip solutions is exactly the same.[/QUOTE]</p><p><br /></p>

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