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Mendeleev · Reaction

Hydrogen peroxide decomposition

Hydrogen peroxide decomposition: balanced equation with an atom-by-atom conservation check.

Reaction
2H2O2 → 2H2O + O2
ElementLeftRight
H44
O44

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.