Balancing Equations

The number of atoms on the reactant side has to equal to the number of atoms on the product side.

Examples:

• Fe + S --> Fe₂S₃
• 2Fe + 3S --> 1Fe₂S₃
• H₂O -->  H₂ + O₂
• 2H₂O -->  2H₂ + 1O₂
• Al + HCl -->  AlCl₃ + H₂
• 2Al + 6HCl -->  2AlCl₃ + 3H₂
• C₂H₆ + O₂  -->  CO₂   +  H₂O
• 2C₂H₆ + 5O₂  -->  2CO₂   + 6H₂O
• Zn + HCl --> ZnCl₂ + H₂
• 1Zn + 2HCl --> 1ZnCl₂ + 1H₂
• Al + Pb(NO₃)₂ --> Al(NO₃) + Pb
• 2Al + Pb(NO₃)₂ --> 2Al(NO₃) + Pb
• KClO₃ --> KCl + O₂
• 2KClO₃ --> 2KCl + 3O₂
• KOH + H₃PO₄ --> K₃PO₄ + H₂O
• 3KOH + 1H₃PO₄ --> 1K₃PO₄ + 3H₂O
• Al + CuCl₂ --> AlCl₃ + Cu
• 2Al + 3CuCl₂ --> 2AlCl₃ + 3Cu