Chemical equation balancer
Balance a chemical equation and see when the equation is impossible or has multiple solutions.
- Equation balancing
- Mass conservation
- Underdetermined and unbalanceable equations
Balanced
Balanced equation2H2 + O2 → 2H2O
Atoms on each side
Every element must appear the same number of times on both sides. That requirement is one equation per element, which is what makes balancing a linear algebra problem.
H4 = 4balanced
O2 = 2balanced
Mass on each side
Reactants36.03 g/mol≈
Products36.03 g/mol≈
Difference0 g/molzero up to the precision of the atomic weights: conservation of mass is not an assumption here but a consequence of the atom counts matching