question_answer

  During extraction of metals, electrolytic refining is used to obtain pure metals. (a) Which material will be used as anode and cathode for refining of silver metal by this process? (b) Suggest a suitable electrolyte also. (c) In this electrolytic cell, where do we get pure silver after passing electric current?

Answer:

                  (a) Anode  Impure silver metal                    (1/2) Cathode Pure silver metal                            (1/2) (b) Aqueous solution of a silver salt like  can be used as an electrolyte.      (1/2) (c) We get pure silver at cathode, because at cathode, reduction reaction takes place. takes place.                   (1/2)