Process of making sulphuric acid
Computer Science
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Answer
The industrial production of sulfuric acid primarily uses the Contact Process.
Step-by-step solution
4 stepsSulfur dioxide (SO₂) is produced by burning sulfur or sulfide ores in air.
S(s) + O₂(g) → SO₂(g)
Sulfur dioxide is then oxidized to sulfur trioxide (SO₃) in the presence of a catalyst, typically vanadium pentoxide (V₂O₅), at high temperatures (400-450°C) and moderate pressure.
This is a reversible reaction.
2SO₂(g) + O₂(g) ⇌ 2SO₃(g)Sulfur trioxide is absorbed into concentrated sulfuric acid to form oleum (H₂S₂O₇).
SO₃(g) + H₂SO₄(l) → H₂S₂O₇(l)
Oleum is then diluted with water to produce sulfuric acid of the desired concentration.
H₂S₂O₇(l) + H₂O(l) → 2H₂SO₄(l)
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