Question

Which of the following is the key step in the manufacture of sulphuric acid ?
(a) Burning of sulphur or sulphide ores in air to generate SO₂
(b) Conversion of SO₂ to SO₃ by the reaction with oxygen in presence of catalyst.
(c) Absorption of SO₃ in H₂SO₄ to give oleum.
(d) Both (b) and (c)

Answer 1

(b) The key step in the manufacture of H₂ SO₄ is catalystic oxidation of SO₂ with O₂ to give SO₃ in presence of V₂O₅