H2O2 - Hydrogen Peroxide

What is Hydrogen Peroxide?

Hydrogen peroxide is simplest peroxide. J.L Thenard who was a French chemist discovered Hydrogen peroxide in the year 1818. It is colorless chemical compound composed of hydrogen and oxygen. Its molecular formula is H2O2. It is acidic in nature and PH is about 4.5. It is 100 percent degradable compound. Ways of preparing hydrogen peroxide in laboratory: by the action of cold dilute H2SO4  on sodium or barium peroxide.

Properties of H2O2 (Hydrogen peroxide)

Hydrogen peroxide Chemical formula H2O2
Molecular Weight/ Molar Mass 4.0147 g/mol
Density 1.05 g/cm3
Boiling Point 150.2 °C
Melting Point -0.43 °C

Hydrogen Peroxide Structure (H2O2)

Hydrogen Peroxide Structure

Hydrogen peroxide uses

  • It is used as bleaching agent in industries and for domestic purpose for hair
  • It is used as an antiseptic to clean teeth, wash wounds
  • It is used in the preservation of wine and milk
  • Our white blood cells produce hydrogen peroxide to kill bacteria
  • It is used to clean stains from sensitive fabrics and clothes
  • Soaking feet in water mixed with hydrogen peroxide for 15 min everyday for a week will help to get rid of fungus
  • Plant growth can be sustained by sprinkling mixture of hydrogen peroxide and water in equal amounts

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Practise This Question

Hund's Rule states that: