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<p>[QUOTE=&quot;davidh, post: 1264527, member: 15062&quot;]<b>Rim:</b></p><p><b><br /></b></p><p>I don&#039;t suggesst that Ask.com is neccessarily the go-to source for everything but you might take a look at this:</p><p><a href="http://www.ask.com/questions-about/Will-HCL-CU-React#anchl_3" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.ask.com/questions-about/Will-HCL-CU-React#anchl_3" rel="nofollow">http://www.ask.com/questions-about/Will-HCL-CU-React#anchl_3</a></p><p><br /></p><p>Here is an actual experiment:</p><p><a href="http://www2.uni-siegen.de/~pci/versuche/english/v44-24-1.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www2.uni-siegen.de/~pci/versuche/english/v44-24-1.html" rel="nofollow">http://www2.uni-siegen.de/~pci/versuche/english/v44-24-1.html</a></p><p><br /></p><p>And a video of Cu in HCl:</p><p><a href="http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA3/MVHTM/VOLTAGE/VOLTAGE2.HTM" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA3/MVHTM/VOLTAGE/VOLTAGE2.HTM" rel="nofollow">http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA3/MVHTM/VOLTAGE/VOLTAGE2.HTM</a></p><p><br /></p><p>The Reactivity Series shows which elements react with water, acid and oxidizing acids:</p><p><a href="http://en.wikipedia.org/wiki/Activity_series" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://en.wikipedia.org/wiki/Activity_series" rel="nofollow">http://en.wikipedia.org/wiki/Activity_series</a></p><p><br /></p><p>Quite simply:</p><p>Cu + HCl --&gt; <i>no reaction</i></p><p><i><br /></i></p><p><i></i><b>medoraman:</b></p><p><b><br /></b></p><p><b></b>In effect, what you&#039;re saying is that you don&#039;t really know, but someone said that some penny was dipped in acid to remove the copper so it must be so.</p><p><br /></p><p>I&#039;m not necessarily saying that some acids won&#039;t react with Copper, but that Hydrochloric Acid will not.&nbsp; The acids that will react with Copper either need equipment and precautions not normally found at home, or they require time and heat to produce any reaction in a reasonable amount of time.&nbsp; &nbsp; If you have a ventilated exhaust hood, Pyrex glassware and a laboratory heater then have a go at it.&nbsp; Alternatively, you can use a weak acid like citric or acetic, put your penny in and wait a month or two to see if anything happens.[/QUOTE]</p><p><br /></p>

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