CaO + Cl2 = Ca(OCl)2 + CaCl2

Balanced Chemical Equation – Solution

2CaO + 2Cl2 → Ca(OCl)2 + CaCl2

The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. New substances are formed as a result of the rearrangement of the original atoms. As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged – this follows from the law of conservation of mass of substances.

Chemical Reaction Information

Calcium Oxide + Dichlorine = Calcium Hypochlorite + Calcium Chloride

This is an oxidation-reduction (redox) reaction. Cl2 is both an oxidizing and a reducing agent (disproportionation (dismutation)).

  • 2 Cl0  2 e  2 ClI (oxidation)
  • 2 Cl0 + 2 e  2 Cl-I (reduction)

Reaction Type

Double Displacement (Metathesis)

Substances that react are called starting materials or reactants. The substances that form as a result are called reaction products.


CaO – Calcium oxide

  • Other names: Quicklime.
  • Appearance: White to pale yellow/brown powder; White hygroscopic crystalline powder.


  • Names: Chlorine.
  • Appearance: Greenish-yellow compressed liquefied gas with pungent odour.



  • Names: Sodium sulfateSodium sulphateSulfate of sodium.
  • Appearance: White crystalline solid | hygroscopic; White hygroscopic solid in various forms.

CaCl2 – Calcium chloride

  • Other names: Calcium hypochlorite
  • Appearance: White powder, hygroscopic.
Similar Examples of Equalizing a Chemical Reaction
CaO + Cl2 = CaCl2 + O
CaO + Cl2 + NH3 = CaCl2 + H2O + N2
CaO + Cl2 = CaCl2 + Ca(ClO)2
Cl2 + CaO → CaOCl2
CaO + Cl2 = CaCl + O2
CaO + Cl2 = CaCl + O
Cl2 + CaO → O2 + CaCl2
Ca(OCl)2 + CaCl2 + CO2 = CaCO3 + Cl2
Ca(OCl)2 + CaCl2 + H2O = Ca(OH)2 + Cl2

Alexander Stephenson

Candidate of Chemical Sciences, editor-in-chief of Lecturer at several international online schools, member of the jury of chemistry competitions and author of scientific articles.

Rate author

Leave a Reply