1. H ₂ SO ₃ , sulphurous acid 2. H ₂ SO ₄ , sulphuric acid 3. H ₂ S ₂ O ₈ , peroxodisulphuric acid 4. H ₂ S ₂ O ₇ , pyrosulphuric acid

Answer: 3. H ₂ S ₂ O ₈ , peroxodisulphuric acid The peroxo linkage -O-O- is present in peroxoacids. H₂S₂O₈ (peroxodisulphuric acid, Marshall's acid) is mathrmHO₃S-O-O-SO₃H . H₂SO₃ and H₂SO₄ have none. H₂S₂O₇ has an S-O-S bridge only. Answer: option (3).

Topic: General trends, Group 15 and 16· p-Block Elements

Which of the following oxoacid of sulphur has -O-O- linkage ?

1. H\(_2\)SO\(_3\), sulphurous acid

2. H\(_2\)SO\(_4\), sulphuric acid

3. H\(_2\)S\(_2\)O\(_8\), peroxodisulphuric acid

4. H\(_2\)S\(_2\)O\(_7\), pyrosulphuric acid

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Answer: 3. H\(_2\)S\(_2\)O\(_8\), peroxodisulphuric acid

The peroxo linkage \(-\mathrm{O-O}-\) is present in peroxoacids. \(\mathrm{H_2S_2O_8}\) (peroxodisulphuric acid, Marshall's acid) is \(\mathrm{HO_3S{-}O{-}O{-}SO_3H}\).

\(\mathrm{H_2SO_3}\) and \(\mathrm{H_2SO_4}\) have none. \(\mathrm{H_2S_2O_7}\) has an \(\mathrm{S-O-S}\) bridge only. Answer: option (3).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Which of the following oxoacid of sulphur has -O-O- linkage ?

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