Mendeleev
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Mendeleev · Reaction

Iron oxidation

Iron oxidation: balanced equation with an atom-by-atom conservation check.

Reaction→
4Fe + 3O2 → 2Fe2O3
ElementLeftRight
O66✓
Fe44✓

Coefficients in front of formulas set the reaction proportions. They do not change the chemical formulas themselves.

An equation is balanced when every element has the same total number of atoms on the left and on the right.