Most of the copper used to make wire has been electrically refinedby d – InterviewSolution

1.	Most of the copper used to make wire has been electrically refinedby depositing it from copper salts solution (divalent) on to a cathode. What is the ost of electrical energy required per kg of copper if the cost of electricity is Rs. 0.25 per kWh and the cell operates at 0.2 volt ? The electrochemical equivalent of copper is 0.00033 g/coulomb.
Answer» Solution :NO. of EQ. in 1 KG of CU `XX 0.25`/ no. of eq. of Cu deposited by 1 kWh = cost in rupees.

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