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Oxygen Stoichiometry for Complete Combustion Calculator

Moles of O₂ consumed for complete combustion of CₓHᵧOᵤ.

Given the number of carbon (x), hydrogen (y), and oxygen (z) atoms in one molecule of a hydrocarbon or oxygenate fuel, calculates moles of O₂ required per mole of fuel: n_O₂ = x + y/4 − z/2.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
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  3. Hover any result row for the underlying formula and intermediate values.

Formula

n(O₂) = x + y/4 − z/2

In depth

Given the number of carbon (x), hydrogen (y), and oxygen (z) atoms in one molecule of a hydrocarbon or oxygenate fuel, calculates moles of O₂ required per mole of fuel: n_O₂ = x + y/4 − z/2.