How to create a lab that will help produce pure copper from these materials: Copper(II) sulfate pentahydrate,aluminum...
iron, zinc, silicon, sodium chloride, sodium hydroxide, hydrolic acid, calcium chloride, and zinc sulfate heptahydrate....
I just need some clues on how to start, could anyone please help?
3 Answers to "How to create a lab that will help produce pure copper from these materials: Copper(II) sulfate pentahydrate,aluminum..."
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I think it's about selective breeding. You need to find two Labradors that are closer to a pure copper color than most Labradors and then you just keep breeding them until eventually you get only Copper Labs instead of Golden ones.
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I would use electrolysis with a cathode and anode. Use a low voltage DC power supply and electroplate the copper from the salts.
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everywhere i research, and all the answers being received lead me to electrolysis with "cathode and anode" yet my chemistry teacher told us that we had to use all/some of the materials that he listed, yet I don't know how they are related to electrolysis... he haxn't taught us what it necessarily means.... but thanks
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Best Answer (Chosen By Asker):
Posted by belial259 Feb 13th, 2013 at 6:21PM
To purify copper electrolytically, the impure copper metal is made the anode (the positive electrode) in an electrolytic cell. A thin sheet of previously purified copper is used as the cathode (the negative electrode). The electrolyte (the current-carrying liquid in between the electrodes) is a solution of copper sulfate and sulfuric acid. When current is passed through the cell, positively charged copper ions (Cu2+) are pulled out of the anode into the liquid, and are attracted to the negative cathode, where they lose their positive charges and stick tightly as neutral atoms of pure copper metal. As the electrolysis goes on, the impure copper anode dissolves away and pure copper builds up as a thicker and thicker coating on the cathode. Positive ions of impurity metals such as iron, nickel, arsenic and zinc also leave the anode and go into the solution, but they remain in the liquid because the voltage is purposely kept too low to neutralize them at the cathode. Other impurities, such as platinum, silver and gold, are also released from the anode, but they are not soluble in the solution and simply fall to the bottom, where they are collected as a very valuable sludge. In fact, the silver and gold sludge is usually valuable enough to pay for the large amount of electricity that the electrolytic process uses.
Read more: Copper - Making Pure Copper - Anode, Cathode, Electrolytic, and Solution - JRank Articles http://science.jrank.org/pages/1781/Copper-Making-pure-copper.html#ixzz2KpPylTCI
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