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Question
What is electroplating? How will you carry out electroplating of copper in the laboratory?
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Solution
Electroplating is the process of coating a thin layer of a metal such as gold, silver, chromium, etc., over another metal.
This is done to protect the metal or to lend it an attractive look.
For electroplating copper in the laboratory, the following steps are to be taken:
- Fill three-forth of a beaker with copper sulphate solution.
- Hammer a copper wire to flatten it; then connect it to the positive terminal of a battery.
- Connect a spoon to the negative terminal of the battery.
- Dip the copper wire as well as the spoon in the copper sulphate solution, and let the current pass.
At the end of this experiment, you will observe a layer of copper formed over the spoon.
This is done to protect the metal or to lend it an attractive look.
For electroplating copper in the laboratory, the following steps are to be taken:
- Fill three-forth of a beaker with copper sulphate solution.
- Hammer a copper wire to flatten it; then connect it to the positive terminal of a battery.
- Connect a spoon to the negative terminal of the battery.
- Dip the copper wire as well as the spoon in the copper sulphate solution, and let the current pass.
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