Hydrogen peroxide [Chemical formula, Physical, Chemical Properties and Reactions]

By: Prof. Dr. Fazal Rehman Shamil | Last updated: February 3, 2024

Chemical formula of hydrogen peroxide is H2O2.

PropertyDescription
AppearanceColorless liquid
Boiling Point150.2 °C
Chemical FormulaH2O2
Density1.45 g/cm³
Melting Point-0.43 °C
OdorSlightly pungent
pH LevelAcidic (around pH 3)
SolubilityMiscible with water, alcohol, and ether
Vapor Pressure23.3 mmHg at 20 °C

Chemical Properties of Hydrogen Peroxide:

Reaction of hydrogen peroxide

Alkali metal

Alkali metalReactionBalanced chemical equation
Lithium (Li)Reaction2Li + 2H2O2   react and changes into  2LiOH + H2O + O2
Sodium (Na)Reaction2Na + 2H2O2   react and changes into  2NaOH + H2O + O2
Potassium (K)Reaction2K + 2H2O2   react and changes into  2KOH + H2O + O2
Rubidium (Rb)Reaction2Rb + 2H2O2   react and changes into  2RbOH + H2O + O2
Cesium (Cs)Reaction2Cs + 2H2O2   react and changes into  2CsOH + H2O + O2

 

Alkaline earth metal

Alkaline earth metalReactionBalanced chemical equation
Beryllium (Be)ReactionNo reaction
Magnesium (Mg)ReactionMg + H2O2   react and changes into  MgO + H2O + O2
Calcium (Ca)ReactionCa + 2H2O2   react and changes into  Ca(OH)2 + H2O + O2
Strontium (Sr)ReactionSr + 2H2O2   react and changes into  Sr(OH)2 + H2O + O2
Barium (Ba)ReactionBa + 2H2O2   react and changes into  Ba(OH)2 + H2O + O2

Transition metal

 

Transition metalReactionBalanced chemical equation
Scandium (Sc)ReactionNo reaction
Titanium (Ti)ReactionTi + 2H2O2   react and changes into  TiO2 + 2H2O
Vanadium (V)ReactionV + H2O2   react and changes into  VO2 + 2H+
Chromium (Cr)ReactionCr + 3H2O2   react and changes into  Cr(OH)3 + 3H+
Manganese (Mn)ReactionMn + 2H2O2   react and changes into  MnO2 + 2H2O
Iron (Fe)ReactionFe + H2O2   react and changes into  FeO + H2O
Cobalt (Co)ReactionCo + H2O2   react and changes into  Co(OH)2
Nickel (Ni)ReactionNi + H2O2   react and changes into  Ni(OH)2
Copper (Cu)ReactionCu + H2O2   react and changes into  CuO + H2O
Zinc (Zn)ReactionZn + H2O2   react and changes into  ZnO + H2O

 

 

Non-transition metal

Non-transition metalReactionBalanced chemical equation
Aluminum (Al)Reaction2Al + 6H2O2   react and changes into  2Al(OH)3 + 3H2O + 3O2
Gallium (Ga)Reaction2Ga + 6H2O2   react and changes into  2Ga(OH)3 + 3H2O + 3O2
Indium (In)ReactionIn + 3H2O2   react and changes into  In(OH)3 + 3H+
Tin (Sn)ReactionSn + 2H2O2   react and changes into  SnO2 + 2H2O
Lead (Pb)ReactionPb + 2H2O2   react and changes into  PbO2 + 2H2O
Antimony (Sb)ReactionSb + 3H2O2   react and changes into  Sb(OH)3 + 3H+
Bismuth (Bi)Reaction2Bi + 6H2O2   react and changes into  2Bi(OH)3 + 3H2O + 3O2

 

Non-metal element

Non-metal elementReactionBalanced chemical equation
Hydrogen (H)Reaction2H2O2   react and changes into  2H2O + O2
Carbon (C)ReactionC + 2H2O2   react and changes into  CO2 + 2H2O
Nitrogen (N)ReactionNo reaction
Oxygen (O)Reaction2H2O2   react and changes into  2H2O + O2
Fluorine (F)Reaction2H2O2 + 2HF   react and changes into  2H2O + O2
Chlorine (Cl)Reaction2H2O2 + 2HCl   react and changes into  2H2O + Cl2
Bromine (Br)Reaction2H2O2 + 2HBr   react and changes into  2H2O + Br2
Iodine (I)Reaction2H2O2 + 2HI   react and changes into  2H2O + I2

 

Metalloid element

 

Metalloid elementReactionBalanced chemical equation
Boron (B)ReactionNo reaction
Silicon (Si)ReactionNo reaction
Germanium (Ge)ReactionGe + 3H2O2   react and changes into  GeO2 + 3H2O
Arsenic (As)ReactionAs + 3H2O2   react and changes into  AsO43- + 3H+
Antimony (Sb)ReactionSb + 3H2O2   react and changes into  Sb(OH)3 + 3H+
Tellurium (Te)ReactionTe + 4H2O2   react and changes into  TeO42- + 4H+