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Acids and Alkalis
Manufacture of Sulfuric Acid - The Contact Process.
Sulfuric acid is made using the contact process.
acid has many uses in industry.
The amount of sulfuric acid which a country uses in one year
can be a measure of that country's economic development
(how modern or wealthy it is).
Raw Materials to Make Sulfuric acid.
materials (the things you need) are sulfur, air and
Sulfur is available from fossil fuels and sulfide ores.
When sulfur in fossil fuels is burned it produces sulfur dioxide gas.
This is the balanced
equation for the reaction of
sulfur with oxygen.
S(s) + O2(g) SO2(g)
Sulfide ores are heated in air
to produce the metal oxide and sulfur dioxide gas, for example
+ oxygen lead oxide + sulfur
2PbS(s) + 3O2(g) 2PbO(s) + 2SO2(g)
The metal is then extracted from the metal oxide.
Sulfur is oxidised in these reactions to become sulfur
Both of the above reactions are exothermic.
The sulfur dioxide gas produced from both of the above methods
is used to make sulfur trioxide.
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