Decomposition:
Pure hydrogen peroxide is unstable and decomposes on standing. On heating water and oxygen are formed.
Pure hydrogen peroxide is unstable and decomposes on standing. On heating water and oxygen are formed.
2H2O2
→ 2H2O +
O2
Oxidizing Nature
It is a powerful oxidizing agent. It functions as an electron acceptor.
H2O2 +
2H+ + 2e- →
2H2O
(In acidic solution)
H2O2- +
2e- → 2OH-
(In
alkaline solution)
2KI +
H2O2 → 2KOH
+ I2
(In neutral medium)
It oxidizes ferrous salts into ferric salts.
2Fe2+ +
2H+ + H2O2 →
2Fe3+ + 2H2O
Reducing Agent :
Ag2O +
H2O2 → 2Ag
+ H2O +
O2
Hydrogen peroxide act as a reducing agent. In above equation moist silver oxide is reduced to silver.
Addition Reaction:
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