Extracting Iron And Aluminium Flashcards
What is the main ore of aluminium?
Bauxite
Why is Aluminium oxide dissolved into cryolite?
Aluminium Oxide has too high a melting point, so it would be way too expensive?
What are the electrodes made from?
Graphite/carbon
What ions go to the cathodes?
Positive Ions because it is the negative electrode so they attract, so Al 3+ would be attracted there
In the extracting of aluminium what is the gas formed at the anode?
Oxygen because it is a negative ion and the anode is positive
What sort of reaction is the extraction of aluminium?
Redox
What are the half equations in the extraction of aluminium?
Al (3+) + 3e- ——} Al
2O (2-) ——> O2 + 4e-
What are the raw materials in the blast furnace?
Coke
Limestone
Iron Ore
What is the reaction with Iron Oxide and Carbon Monoxide to form pure Iron?
3CO +. Fe2O3 —> 3CO2 + 2Fe
How is Carbon Monoxide formed?
CO2 reacts with unburnt Coke
What is the molten Slag equation?
CaO. + SiO2 —> CaSiO3
What are some used of slag?
Road Building, Fertiliser
Uses of Aluminium?
Bicycle Frames, Aeroplanes, becaUse it isn’t very dense
Drinks cans, doesn’t rust
Uses of Iron?
Knives, Cooking pans and Forks but it forms an alloy with chromium to prevent it from rusting
What is the formula for aluminium oxide?
Al2O3
