Stoichiometry calculator

Stoichiometry Calculator calculates the amounts of reactants and products in a balanced chemical reaction based on a given quantity of a substance.

How to Use Stoichiometry Calculator:

1. Enter a balanced chemical equation (e.g., 2H2 + O2 -> 2H2O).
2. Specify a substance from the equation (e.g., H2, O2, H2O).
3. Enter the quantity of the substance in moles (e.g., 2.5).
4. Click “Calculate Stoichiometry” to compute the moles of other substances.
5. Use “Copy Results” to copy the results to the clipboard (requires HTTPS).

Important Notes:

• Equation must be balanced and use -> to separate reactants and products.
• Substance must match a chemical in the equation exactly.
• Quantity must be a positive number (0.001 to 1000 moles).
• Stoichiometric ratios are based on the coefficients in the equation.
• Clipboard access requires a secure context (HTTPS). If copying fails, copy manually.

Stoichiometry Examples:

1. Example 1:
   Equation: 2H2 + O2 -> 2H2O
   Substance: H2, Quantity: 4 moles
   Expected: O2: 2 moles, H2O: 4 moles
2. Example 2:
   Equation: CH4 + 2O2 -> CO2 + 2H2O
   Substance: CH4, Quantity: 1 mole
   Expected: O2: 2 moles, CO2: 1 mole, H2O: 2 moles
3. Example 3:
   Equation: N2 + 3H2 -> 2NH3
   Substance: N2, Quantity: 2 moles
   Expected: H2: 6 moles, NH3: 4 moles