There are 2 oxygen atoms on the reactant (left) side of the equation Now we get "stuck" balancing the oxygen atoms.īecause oxygen is diatomic in the reactants, and there are an odd total number of oxygen atoms in the products, we cannot balance the equation at this point by simply using whole number coefficients. Balance the hydrogen atoms by placing a 7 in front of H 2O in the products.ģ.
First we will balance the carbon atoms by placing a 6 in front of CO 2 in the products.Ģ. The products of the combustion of hexane in the presence of oxygen are carbon dioxide and water.ġ.
Let's examine this technique by trying to balance the equation for the combustion of hexane.
The is especially useful when you have a diatomic element like O 2 and N 2 on one side of the chemical equation, and you find yourself "stuck" trying to balance it. Sometimes it is easier to balance chemical equations by using a fraction as a coefficient.
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