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(a) The diagram below represents a dry cell. Use it to answer the questions that follow.
(i) Which of the letters represent:
(I) Carbon electrode?
(II) The electrolyte?
(ii) One of the substances used in a dry cell is manganese (IV) oxide. State two roles of manganese (IV) oxide in the dry cell.
(b) Below is a simplified electrolytic cell used for purification of copper. Study it and answer the questions that follow.
(i) Identify the cathode.
(ii) Write the equation for the reaction at the anode.
(iii) What name is given to L?
(iv) A current of 0.6 A was passed through the electrolyte for 2 hours. Determine the amount of copper deposited. (Cu = 63.5; l Faraday = 96,500 coulombs).
(v) State two uses of copper metal.