3. (a) Aluminium can be extracted by electrolysis using the apparatus shown power supply anodes - wires cathode aluminium oxide and cryolite molten aluminium (i) Give two reasons why cryolite is used. 1 (2)

3. (a) Aluminium can be extracted by electrolysis using the apparatus shown power supply anodes - wires cathode aluminium oxide and cryolite molten aluminium (i) Give two reasons why cryolite is used. 1 (2)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

(d) Apart from using a higher temperature, suggest two other methods of increasing the
rate of this reaction.
1
(2)
3. (a) Aluminium can be extracted by electrolysis using the apparatus shown
power
supply
anodes
-wires
cathode
aluminium oxide
and cryolite
molten aluminium
(i) Give two reasons why cryolite is used.
2
(2)

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