ICSE 1996 : SCIENCE Paper 2 (Chemistry) - Question 5(b) Answer the following.

SCIENCE
Paper 2 (Chemistry) - 1996
(One hour and a half)

Question 5
(b) The following questions related to the extraction of aluminium by electrolysis:

: Fill in the blanks

Your Performance

1.
(i) Give the equation for the reaction that takes place at the cathode.

2.
(ii) Explain why it is necessary to renew the anode from time to time.

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