What are the different oxyacids of sulphur? - Vidyadip

Question

What are the different oxyacids of sulphur?

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Answer

Sulphurous acid: $H _2 SO _3$
Sulphuric acid (Oil of vitriol): $H _2 SO _4$
Di or pyrosulphuric acid or oleum $H _2 S _2 O _7$
Peroxy monosulphuric acid or Caro's acid $H _2 SO _5$
Peroxy sulphuric acid (or Marshall's acid: $H _2 S _2 O _8$
Thiosulphuric acid $H _2 S _2 O _3$

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