Question

Hydrolysis of one mole of peroxydisulphuric acid produces
A) Two moles of sulphuric acid
B) Two moles of peroxymonosulfuric acid
C) One mole of sulphuric acid and one mole of peroxymonosulfuric acid
D) One mole of sulphuric acid, one mole of peroxymonosulfuric acid, and one mole of hydrogen peroxide

Answer 1

The chemical formula of the peroxydisulfuric acid is ${{\text{H}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{8}}}$. It is also called Marshall's acid which exists as colourless solid.
The chemical formula of the peroxymonosulfuric acid is ${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{5}}}$ it is also called as persulfuric acid or Caro’s acid. It is amorphous, white crystalline solid, hygroscopic in nature.
The sulphuric acid has chemical formula${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}$. It is colourless, odourless oily liquid.

Complete step-by-step answer:
The hydrolysis reaction of peroxydisulphuric acid is as follows:
${{\text{H}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{8}}}{\text{ + }}{{\text{H}}_{\text{2}}}{\text{O}} \to {{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{5}}}{\text{ + }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}$
Here, we can observed that the products of the hydrolysis reaction are one mole of ${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{5}}}$ and one mole of ${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}$.
${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{5}}}$ is peroxymonosulfuric acid and ${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}$ is sulphuric acid.

Here, option(A) two moles of sulphuric acid is incorrect.
Now, option(B) two moles of peroxymonosulfuric acid is also incorrect.
Here, option(C) one mole of sulphuric acid and one mole of peroxymonosulfuric acid is the correct answer to the question.
Option(D) one mole of sulphuric acid, one mole of peroxymonosulfuric acid, and one mole of hydrogen peroxide is also an incorrect answer.

Note: The reaction in which chemical bonds in substance or compounds are broken down by using the water is known as hydrolysis reaction. Hydrolysis reactions are exothermic reactions because by breaking of the bond energy is released.
The hydrolysis reaction is generally represented as follows:
${\text{AB + }}{{\text{H}}_{\text{2}}}{\text{O}} \to \,{\text{AH + BOH}}$

Here, water is broken down into ${{\text{H}}^ + }$ and ${\text{O}}{{\text{H}}^ - }$ which is then reacts with the substance and form the new compounds.