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In this I/GCSE chemistry blog post we will look into the different ways of extracting ores.
1. Iron Ore (Iron III oxide)
Coke reacts with oxygen in air, giving carbon dioxide. CARBON IS OXIDISED.
- C + O2 → CO2
Carbon Monoxide is made. CARBON DIOXIDE IS REDUCED.
- C + CO2 → 2CO
Iron oxide is reduced. CARBON MONOXIDE IS THE REDUCING AGENT. IT IS OXIDISED TO CARBON DIOXIDE.
- Fe2O3 + 3CO → 2Fe + 3CO2
IRON IS REDUCED
Limestone usage
CaCO3 → C aO + CO2 THIS IS TO REMOVE THE SAND(silica)
- CaO + SiO2 → CaSiO3
2. Aluminium Ore (Aluminium Oxide)
AT THE CATHODE: Al3+ + 3e− → Al (REDUCTION)
AT THE ANODE: 2O2− → O2 + 4e− (OXIDATION)
Overall reaction:
2Al2O3(l) → 4Al(l) + 3O2(g)
That is all for this post!
References:
https://www.google.com/url?sa=i&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FIron(III)_oxide&psig=AOvVaw1DF9ZynP1BmHbe9klFwq--&ust=1629640125347000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCNirgOOgwvICFQAAAAAdAAAAABAD
https://www.google.com/url?sa=i&url=https%3A%2F%2Fspmchemistry.blog.onlinetuition.com.my%2F2012%2F12%2Foxidising-and-reducing-agents.html&psig=AOvVaw1-JznoV4Un3WiI2CZaniff&ust=1629640187145000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCNjiiPagwvICFQAAAAAdAAAAABADore