The balanced equation for the combustion of stearic acid to gaseous products is: C₁₈H₃₆O₂(s) + 26O[tex]_{2}[/tex] (g)--------→ 18CO[tex]_{2}[/tex](g) + 18H[tex]_{2}[/tex]O(g)
A fuel and an oxidant, typically atmospheric oxygen, engage in a high-temperature exothermic redox chemical reaction known as combustion or burning, which results in the production of oxidized, frequently gaseous products in a mixture known as smoke.
One of the most prevalent long-chain fatty acids is stearic acid, also known as octadecanoic acid, which is present in a combination form in natural animal and vegetable fats. Commercial "stearic acid" is a blend of stearic and palmitic acids in roughly equal quantities, with trace amounts of oleic acid. The following equation describes the full combustion of stearic acid C₁₈H₃₆O₂(s) + 26O[tex]_{2}[/tex] (g)--------→ 18CO[tex]_{2}[/tex](g) + 18H[tex]_{2}[/tex]O(g) The reaction's standard enthalpy is AH" 10 488 kJ/mol.
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