4 Write down half-equations for the processes occurring during electrolysis at: a the anode: b the cathode: . 5 Complete the two statements. a Oxidation . b Reduction (. of electrons) occurs at the. of electrons) occurs at the *....... * *.. ..........

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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The extraction of aluminium
The diagram shows the electrolysis of alumina (aluminium oxide) purified from bauxite.
graphite
anodes
graphite Inng
(amode)
de spply
solid crust
krming on
minture
aluminium
oide
dssoved
nayolte
moten
aluninium
3 a What is the formula for aluminium oxide?
b What ions are present in aluminium oxide? .
c What is the purpose of the cryolite in the process?
4 Write down half-equations for the processes occurring during electrolysis at:
a the anode: .
b the cathode:
5 Complete the two statements.
a Oxidation .
b Reduction (.
of electrons) occurs at the.
of electrons) occurs at the.
Transcribed Image Text:The extraction of aluminium The diagram shows the electrolysis of alumina (aluminium oxide) purified from bauxite. graphite anodes graphite Inng (amode) de spply solid crust krming on minture aluminium oide dssoved nayolte moten aluninium 3 a What is the formula for aluminium oxide? b What ions are present in aluminium oxide? . c What is the purpose of the cryolite in the process? 4 Write down half-equations for the processes occurring during electrolysis at: a the anode: . b the cathode: 5 Complete the two statements. a Oxidation . b Reduction (. of electrons) occurs at the. of electrons) occurs at the.
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