A beaker contains an acidified copper sulphate solution. A copper plate and a carbon rod are kept in this copper sulphate solution. The copper plate is connected to the positive terminal of a battery whereas the carbon rod is connected to the negative terminal of the battery. What will you observe when an electric current is passed through this set-up for a considerable time?
ScienceClass 8ICSEAnswered 28 Mar 2026
Answer
Carbon is reactive than copper and when electricity is passed through it the carbon replaces copper ions and deposits on the negative electrode. Thus a red-brown layer of copper metal will be deposited on the carbon rod connected to the negative terminal of the battery.
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