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!

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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