Redox Flashcards
What is a redox reaction
A Redox Reaction is one which oxidation and reduction occur at the same time
What is a Oxidation
Oxidation is gain of oxygen , loss of hydrogen or loss of electrons
What is Reduction
Reduction is loss of oxygen, gain of hydrogen or gain of election
What is Rust
Rust is Hydrated Iron III Oxide
How is Rust Formed
Rust is formed when iron reacts with water and oxygen
What are the 5 Barrier Methods to prevent Rusting
Painting(brides)
Oiling/greasing(garden tools/machinery)
Plastic coating(Bicycle handbars)
Metal Plating
Alloying(curtlery)
Explain Sacrificial protection of iron
A Metal which is more reactive than iron is placed in contact with the iron and the more reactive metal reacts first instead of iron
What is the main ore of iron
Hematite
Iron(III) oxide
Explain the extraction of Iron
A Solid mixture of Haematite,limestone and coke(carbon) is added to the Blast Furnace
Hot air is blasted in at the bottom of the furnace and a series of reactions occur
Carbon (from Coke) burns in oxygen(from air) forming carbon dioxide, which reacts with more carbon forming carbon monoxide
Carbon Monoxide is the reducing Agent which reduces Iron(iii) oxide to iron
Explain the removal of acidic impurities from iron ore
The calcium carbonate in the limestone
thermally decomposes due to the heat and produces calcium oxide and carbon dioxide. The
calcium oxide reacts with the silicon dioxide forming calcium silicate, CaSiO₃, which is also
known as slag
Chemical Name for Calcium Silicate
Slag
What is the name of iron ore
Hematite
