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Answer the following questions. a) When we pass current through a copper sulphate solution having copper plate and iron key connected to a battery and tap key in series by closing tap key. What is deposit on iron key? b) If the key is to be coated with zinc or aluminium instead of copper, what changes do we need to make the above experiments? |
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Answer» a) There is red mass of copper deposited on iron key. b) If we want to coat aluminium or zinc or iron then, we have to take electrolyte is like aluminium sulphate or zinc sulphate and the positive electrode is aluminium or zinc. |
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