Q25 of 39 Page 288

Write chemical reactions to justify that hydrogen peroxide can function as an oxidising as well as reducing agent.

Hydrogen peroxide, H2O2 can act as an oxidizing as well as a reducing agent in both acidic and alkaline media.

Reactions involving oxidizing actions are:


(i) PbS + H2O2→ PbSO4 + H2O


(ii) 2F+2 + H2O2→ 2F+3 + 2OH-


Reactions involving reduction actions are:


(i) MnO4- + H2O2→ 2Mn+2 + 8H2O + 5O2


(ii) HOCl + H2O2→ H3O+ + Cl- + O2


More from this chapter

All 39 →
23

Discuss the principle and method of softening of hard water by synthetic ion exchange resins.

 24

Write chemical reactions to show the amphoteric nature of water.

 26

What is meant by ‘demineralised’ water and how can it be obtained?

 27

Is demineralised or distilled water useful for drinking purposes? If not, how can it be made useful?