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Question

if the copper sulphate is connected to battery then which terminal is connected to copper

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Solution

I assume that you are asking this question for electroplating.

During electroplating a thin layer of a desirable metal is deposited onto another object.

During electroplating, the object to be plated is attached to the negative post of a power source, causing the object to gain a negative charge. This will attract positive metallic ions from the electrolytic solution and get deposited on the object placed at cathode.

If we want to electroplate copper over a steel bangle, copper is connected to anode or positive terminal and the bangle which is to be copper plated is connected to cathode or negative terminal. The electrolytic solution will be copper sulphate solution.


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