C8H18 + O2 = CO2 + H2O

Balanced Chemical Equation – Solution

2C8H18 + 25O2 → 16CO2 + 18H2O

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

Octane + Dioxygen = Carbon Dioxide + Water

This is an oxidation-reduction (redox) reaction. C8H18 is a reducing agent, O2 is an oxidizing agent.

  • 16 C-9/4  100 e  16 CIV (oxidation)
  • 50 O0 + 100 e  50 O-II (reduction)

Reaction Type


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


C8H18 – Octane

  • Other names: N-octane, Normal-octane.
  • Appearance: Colorless liquid.


  • Names: Dioxygen, Oxygen.
  • Appearance: Odourless compressed gas; Liquefied gas.



  • Names: Carbon dioxide.
  • Appearance: Colorless gas; Odourless colourless compressed liquefied gas.

H2O – Water, oxidane

  • Other names: Water (H2O), Hydrogen oxide, Hydrogen hydroxide.
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas.
Similar Examples of Equalizing a Chemical Reaction
O2 + C8H18 → H2O + C2
O2 + C8H18 → H2O + CO2 + C + CO
O2 + C8H18 → H2O + CO2 + CO
O2 + C8H18 → H2 + CO2
O2 + C8H18 → H2O + CO
O2 + C8H18 → H2O + CO2

Alexander Stephenson

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

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