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C4 - Extracting Metals (Biological methods of extraction (Phytoextraction,…
C4 - Extracting Metals
Biological methods of extraction
Phytoextraction
Disadvantage - It is a slow process.
Advantage - Absorbs mineral ions through their roots.
Bioloeaching
Advantage - Does not need high temperatures
Disadvantage - Produces toxic substances
Life Cycle Assessment
4 Factors
Manufacture
Product use
Choice of Material
Disposal
Recycling
Advantage - Less plastic goes into the water and pollutes it
Advantage - Re-use materials and components that no one wants
Disadvantage - Not many people do it
Disadvantage - Increased environmental problems
Displacement
The reason iron is extracted by carbon is because it is more reactive so it reduces its electrons.
The reason calcium cannot be extracted by carbon is because it is more reactive than carbon so it needs to be extracted by electrolysis.
Reactivity Series
Potassium, Sodium, Calcium, Magnesium, Aluminium, Carbon,
Zinc, Iron, Tin,
Lead, Copper, Silver, Gold
Haber Process
Equation = nitrogen + hydrogen Equilibrium symbol ammonia
N2(g) + 3H2(g) Equilibrium symbol 2NH3(g)
Conditions
450 degrees C
200 pressure
Iron Catalyst