Chemistry in Industry and Technology. Option C. Aluminium. Syllabus Statements. C.1.8 Describe and explain the production of aluminium by electrolysis of alumina in molten cryolite C1.9 Describe the main properties and uses of aluminium and its alloys .
If the solution is diluted, the Aluminate precipitates out as a Hydroxide.
Aluminium is higher in the reactivity series than iron and Aluminium Oxide can’t be reduced using CO or C.
To complete the overall equation, we have to balance the number of electrons in the half equations.
If coloured dyes are present during anodising, these are incorporated into the oxide layer.
Waste products of mining can be visually unattractive and can produce environmental damage.