CBSE Class 11-science Answered

Reaction for the formation of sulphuric acid and hydrochloric acid from sulphuryl chloride is as follows:

SO₂Cl₂ + 2H₂O  → H₂SO₄ + 2HCl

Moles of HCl produced from 2.5 moles of SO₂Cl₂ = 5 moles

Moles of H₂SO₄ produced from 2.5 moles of SO₂Cl₂ = 2.5 moles

Neutralisation reactions are as follows:

H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

HCl + KOH → KCl + H₂O

5 moles of H₂SO₄ needs KOH = 10 moles

2.5 moles of HCl needs KOH = 2.5 moles

Hence, the total moles of KOH required = 12.5 moles