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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.