MediumChemistryHigh School (9–10)GeneralMetals and Non-metals › Ionic Compounds and Extraction of MetalsNumericalBoard Exam
2.4 kg of haematite, Fe₂O₃, is reduced to iron: Fe₂O₃ + 3CO → 2Fe + 3CO₂…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
of haematite, , is reduced to iron: . Find the mass of iron. Use and .
Need a reminder? The key ideaShow
An ore is a mineral that gives a metal at a profit; gangue is the waste in it. Top of the series: electrolysis of the molten compound. Middle: roast sulphides or calcine carbonates to oxides, then reduce with carbon. Bottom: heat, or found free. Copper is refined by electrolysis: impure anode, pure cathode, anode mud.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Moles. .
Step 2. Iron. .
Answer: , which is .
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