Hydrolysis of one mole of peroxodisulphuric acid produces

Options

A. `2 mol`. Of sulphuric acid.
B. `2 mol`. Of peroxomono sulphuric acid.
C. `I mol`. Of sulphuric acid and `1 mol`. Of peroxomono sulphuric acid.
D. `1 mol`. Of sulphuric acid, `1 mol`. Of peroxomono sulphuric acid, and `1 mol`. Of hydrogen peroxide.

Answer

C

Explanation

Peroxodisulphuric acid `(H_(2) S_(2) O_(8))` or Marshall acid on partial hydrolysis gives `1 mol`.of peroxomonosulphuric acid `(H_(2) SO_(5))` or Caro's acid and `1 mol`. Of `H_(2) SO_(4)`.

Note : But complete hydrolysis of `H_(2) S_(2) O_(8)` gives `2 mol`. of `H_(2) SO_(4)` and `1 mol`. of `H_(2) O_(2)`.
`underset("Marshall acid") (H_(2) S_(2) O_(8)) + 2 H_(2) O rarr 2 H_(2) SO_(4) + H_(2) O_(2)`.