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Question

What should be the considerations during the extraction of metals by electrochemical method?

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Solution

During extraction of metals by electrochemical method the following two points must be considered
(i) Reactivity of metals If the metals are quite reactive and are expected to react with water then the metals should be extracted by the electrolysis of their purified molten ore rather than their aqueous solution.
(ii) Suitability of electrodes The electrods selected should not read with the product of electolysis. If at all they react, then the electrodes must be made up of a material which is quite cheap since their periodic replacement should not increase the cost of the process.


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