Redox, Rusting, and Iron (FT)

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  • Created by: mhen372
  • Created on: 04-05-22 10:58
Oxidation definition
Oxidation is gaining oxygen, or losing hydrogen
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Reduction definition
Reduction is losing oxygen, or gaining hydrogen
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Outline an experiment to investigate rusting and what is needed for rust to form on iron nails
Set up 3 test tubes. A- water, B- boiled water with a layer of oil to stop oxygen into it, and C- no water and calcium chloride to keep the tube dry/free from water. Add an iron nail to each and place a bung on top. Leave them alone. A will be the on
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What 2 conditions are required for rust to form on iron
water and oxygen
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Balanced symbols equation for formation of rust (hydrated iron oxide)
4Fe + 3O2 + H2O = 2Fe2O3.H2O
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Is rusting of iron an oxidation or reduction reaction?
Oxidation, it gains oxygen (Fe -> Fe2O3)
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What 4 barrier methods are used to protect iron from rusting?
Painting, Oiling, Plastic coating, Galvinising
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What is galvanising?
a layer of zinc is used to coat iron. It reacts with oxygen and water first to protect against rusting.
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Is carbon oxidised or reduced in combustion (burning)? use a symbols equation to explain
oxidised, C + O2 -> CO2
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Is nitrogen oxidised or reduced in the following? N2 + H2 -> NH3
Reduced because it gains electrons
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In a reation where both reduction and oxidisation takes place, what do we call that?
Redox
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What is the name of the ore from which iron is extracted
Haematite
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What is the name of the equipment used to extract iron from haematite?
Blast furnace
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How is iron extracted from haematite in the blast furnace?
Haematite ore is added to the top of the blast furnace which operates at 1300 degrees to 2000 degrees celcius. At this temperature, iron oxide in haematite is reduced to pure iron. The pure iron is molten and is tapped off at the bottom of the furnac
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what is the balanced eqution for the recution of iron oxide using carbon monoxide in the blast furnace?
Fe2O3 + 3 CO -> 2Fe + 3 CO2
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Why is iron used for structures such as bridges?
Because it is strong
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Other cards in this set

Card 2

Front

Reduction definition

Back

Reduction is losing oxygen, or gaining hydrogen

Card 3

Front

Outline an experiment to investigate rusting and what is needed for rust to form on iron nails

Back

Preview of the front of card 3

Card 4

Front

What 2 conditions are required for rust to form on iron

Back

Preview of the front of card 4

Card 5

Front

Balanced symbols equation for formation of rust (hydrated iron oxide)

Back

Preview of the front of card 5
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