Hydrolysis of peroxo-disulphuric acid (H_2S_2 | vedclass

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(C) The hydrolysis of peroxo-disulphuric acid $(H_2S_2O_8)$,commonly known as Marshall's acid,produces hydrogen peroxide $(H_2O_2)$ and sulphuric acid

Vedclass · Accepted Answer

$H_2O_2$

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(C) The hydrolysis of peroxo-disulphuric acid $(H_2S_2O_8)$,commonly known as Marshall's acid,produces hydrogen peroxide $(H_2O_2)$ and sulphuric acid $(H_2SO_4)$.The reaction proceeds in two steps:$1. H_2S_2O_8 + H_2O \rightarrow H_2SO_4 + H_2SO_5$ (Peroxomonosulphuric acid or Caro's acid)$2. H_2SO_5 + H_2O \rightarrow H_2SO_4 + H_2O_2$Overall reaction: $H_2S_2O_8 + 2H_2O \rightarrow 2H_2SO_4 + H_2O_2$

Hydrolysis of peroxo-disulphuric acid $(H_2S_2O_8)$ gives

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