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Balanced Chemical Equations

Common reactions solved step by step. Click any equation for the full balanced result and atom-by-atom breakdown.

Combustion

CH4 + 2O2 → CO2 + 2H2O 2C2H6 + 7O2 → 4CO2 + 6H2O C3H8 + 5O2 → 3CO2 + 4H2O 2C4H10 + 13O2 → 8CO2 + 10H2O 2C2H2 + 5O2 → 4CO2 + 2H2O C2H4 + 3O2 → 2CO2 + 2H2O 2C8H18 + 25O2 → 16CO2 + 18H2O C2H5OH + 3O2 → 2CO2 + 3H2O 2CH3OH + 3O2 → 2CO2 + 4H2O 2C6H6 + 15O2 → 12CO2 + 6H2O C6H12O6 + 6O2 → 6CO2 + 6H2O

Synthesis

2H2 + O2 → 2H2O N2 + 3H2 → 2NH3 N2 + O2 → 2NO H2 + Cl2 → 2HCl 2Na + Cl2 → 2NaCl 2K + Cl2 → 2KCl 2Mg + O2 → 2MgO 2Ca + O2 → 2CaO 4Fe + 3O2 → 2Fe2O3 4Al + 3O2 → 2Al2O3 S + O2 → SO2 2SO2 + O2 → 2SO3 P4 + 5O2 → 2P2O5 C + O2 → CO2 CaO + CO2 → CaCO3 Na2O + H2O → 2NaOH 6CO2 + 6H2O → C6H12O6 + 6O2

Decomposition

2H2O2 → 2H2O + O2 2H2O → 2H2 + O2 CaCO3 → CaO + CO2 2KClO3 → 2KCl + 3O2 2NaHCO3 → Na2CO3 + H2O + CO2 Cu(OH)2 → CuO + H2O 2HgO → 2Hg + O2 2KMnO4 → K2MnO4 + MnO2 + O2

Single replacement

Zn + 2HCl → ZnCl2 + H2 Mg + 2HCl → MgCl2 + H2 Fe + 2HCl → FeCl2 + H2 2Al + 6HCl → 2AlCl3 + 3H2 Zn + CuSO4 → ZnSO4 + Cu Fe + CuSO4 → FeSO4 + Cu Cl2 + 2NaBr → 2NaCl + Br2 Mg + 2H2O → Mg(OH)2 + H2

Double replacement

AgNO3 + NaCl → AgCl + NaNO3 BaCl2 + Na2SO4 → BaSO4 + 2NaCl Pb(NO3)2 + 2KI → PbI2 + 2KNO3 2AgNO3 + BaCl2 → 2AgCl + Ba(NO3)2

Acid–base

HCl + NaOH → NaCl + H2O H2SO4 + 2NaOH → Na2SO4 + 2H2O 2HCl + Ca(OH)2 → CaCl2 + 2H2O HNO3 + NaOH → NaNO3 + H2O H3PO4 + 3NaOH → Na3PO4 + 3H2O H2SO4 + 2KOH → K2SO4 + 2H2O

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