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Study of Sulphur Compound Sulphuric Acid — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryStudy of Sulphur Compound Sulphuric Acid3 Marks
Question
Write balanced equations for the three chemical reactions that take place during the conversion of sulphur dioxide to sulphuric acid in the contact process. Name the catalyst used in the contact process.
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Answer

Balanced eqations for the chemical reactions that take place during the conversion of sulphur dioxide to sulphuric acid are :
  1. $2SO_2 + O_2 ⇌ 2SO_3 + Heat$
  2. $SO_3 + H_2SO_4 → H_2S_2O_7$
  3. $H_2S_2O_7 + H_2O → 2H_2SO_4$
    Vanadium pentoxide is used as a catalyst.

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