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๐Ÿงช General & Analytical Chemistry

Methane Combustion Chemical Equation Balancer

Balance the complete hydrocarbon combustion of natural gas (methane) CH4 + 2O2 -> CO2 + 2H2O with step-by-step integer coefficients.

Popular Reactions:

Use uppercase and lowercase symbols properly (e.g. Fe for iron, not FE). Separate with + and -> or =.

Balanced Equation:
Reaction Classification: Combustion

โš–๏ธ Conservation of Mass Check (Atom Count Table)

Element Reactant Atoms (Left) Product Atoms (Right) Status

How to Use This Calculator

  1. Type an unbalanced equation into the input box, separating reactants and products with -> or = (for example: Fe + O2 -> Fe2O3).
  2. Use parentheses for polyatomic groups — the solver fully understands nested formulas like Ca(OH)2, Mg(NO3)2, and Fe2(SO4)3, and it ignores state labels such as (s), (l), (g), and (aq).
  3. Or pick one of the preset reactions above (combustion, rusting, photosynthesis, displacement, redox) to see a worked example instantly.
  4. Press Balance Equation, then read the coefficients shown before each species on both sides of the arrow.
  5. Check the atom verification table below: every element must show equal totals on the left and right with a Balanced status, proving conservation of mass.

Law of Conservation of Mass

Formulated by Antoine Lavoisier in 1789, the Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction. The atoms present in the reactants are simply rearranged to form new products. Consequently, the mass of the reactants must exactly equal the mass of the products.

How to Balance Chemical Equations

  1. Write the correct formulas for all reactants and products. Never alter subscripts.
  2. Count the number of atoms of each element on both sides of the equation.
  3. Balance polyatomic ions that appear unchanged on both sides as single units.
  4. Balance hydrogen and oxygen last, as they frequently appear in multiple compounds.
  5. Multiply all coefficients by the lowest common multiple if fractional coefficients arise.

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โšก Presets & Problem Types Reset to Default ×
🌿 Photosynthesis 🫁 Cellular Respiration 🔥 Methane Combustion 🔥 Methane Combustion ⚙️ Rusting of Iron 🎓 Class 10 Chemistry
Active Formula: CH₄ + 2O₂ → CO₂ + 2H₂O (ΔH < 0)

๐Ÿ“Š Key Chemical Reactions & Stoichiometric Reference

Reaction Name Unbalanced Formula Balanced Equation Reaction Type
Photosynthesis CO2 + H2O -> C6H12O6 + O2 6CO2 + 6H2O -> C6H12O6 + 6O2 Synthesis / Endothermic
Cellular Respiration C6H12O6 + O2 -> CO2 + H2O C6H12O6 + 6O2 -> 6CO2 + 6H2O Combustion / Exothermic
Methane Combustion CH4 + O2 -> CO2 + H2O CH4 + 2O2 -> CO2 + 2H2O Complete Combustion
Rusting of Iron Fe + O2 -> Fe2O3 4Fe + 3O2 -> 2Fe2O3 Oxidation / Synthesis
Water Synthesis H2 + O2 -> H2O 2H2 + O2 -> 2H2O Combination Reaction
โ“ Common Questions & Answers

Frequently Asked Questions about Methane Combustion Chemical Equation Balancer

What is the balanced equation for methane combustion?
The complete combustion equation is CH4 + 2O2 -> CO2 + 2H2O. One mole of methane reacts with two moles of oxygen to form one mole of carbon dioxide and two moles of water.
A chemical equation is balanced according to which law?
A chemical equation is balanced in accordance with the Law of Conservation of Mass, first formulated by Antoine Lavoisier. Matter is neither created nor destroyed during a chemical reaction.
A chemical equation is balanced by changing what?
A chemical equation is balanced strictly by changing stoichiometric coefficients (the numbers in front of chemical formulas). You must never modify chemical subscripts.
What is the difference between a balanced and unbalanced equation?
An unbalanced (skeletal) equation simply lists the reactants and products. A balanced equation has equal numbers of atoms for every element on both the reactant and product sides.
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Reviewed & updated: October 2026 Maintained by the OnlineResult Study Tools Team Report an issue
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