Aluminium is manufactured by the electrolysis of aluminium oxide dissolved in molten cryolite.At the anode, oxide ions react to make oxygen molecules.Construct the ionic half-equation for this electrode reaction
Question
Aluminium is manufactured by the electrolysis of aluminium oxide dissolved in molten cryolite.At the anode, oxide ions react to make oxygen molecules.Construct the ionic half-equation for this electrode reaction
Solution
The half-equation for the reaction at the anode is as follows:
4O^2- → 2O2 + 4e^-
This equation represents the conversion of oxide ions into oxygen molecules, with the release of electrons. This is a process of oxidation, which occurs at the anode in electrolysis.
Similar Questions
This question is about electrolysis, extraction of metals, and properties of materials.Describe the process of extracting aluminium from its ore, including the role of cryolite and the reactions at each electrode. Write half equations where appropriate.
The balanced chemical equation when Aluminium reacts with oxygen to form aluminium oxide is A Al+O2→ Al2O3 c 3A1 3A1+4022A1₂O, B 4Al +3022Al2O3 D 2Al +3022ALO3
Aluminium is extracted by theAreduction of its oxide with carbonBelectrolytic decomposition of its molten oxide aloneCelectrolytic decomposition of its molten oxide in cryoliteDreduction of the molten oxide in cryolite using carbon monoxide
A(n) of aluminum reacts with oxygen to form a(n) .
What is the formula for an ionic compound made of aluminum and oxygen?Group of answer choicesAlO2Al2O3Al3O2AlO
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