Stoichiometry Calculator

Calculate limiting reactants, theoretical yields, and mole ratios for chemical reactions. Perfect for balancing equations and predicting reaction outcomes.

Stoichiometry Calculator

Reactants

Products

About Stoichiometry

What is Stoichiometry?

Stoichiometry is the calculation of relative quantities of reactants and products in chemical reactions. It's based on the conservation of mass and the law of definite proportions.

How to Use

  1. Enter the chemical formulas for reactants and products
  2. Specify the stoichiometric coefficients
  3. Enter the amount of each reactant (in moles)
  4. Provide molecular weights for all compounds
  5. Click Calculate to get stoichiometric results

Key Concepts

  • Limiting Reactant: Reactant that is completely consumed
  • Theoretical Yield: Maximum possible amount of product
  • Excess Reactant: Reactant that remains after reaction
  • Mole Ratio: Ratio of moles to stoichiometric coefficient

Common Compounds

H2O18.015 g/mol
CO244.009 g/mol
O231.999 g/mol
N228.014 g/mol
H22.016 g/mol
NaCl58.443 g/mol
HCl36.461 g/mol
H2SO498.079 g/mol
NaOH39.997 g/mol
CaCO3100.087 g/mol
Fe2O3159.688 g/mol
Al2O3101.961 g/mol

Applications

  • Chemical reaction planning
  • Laboratory experiment design
  • Industrial process optimization
  • Yield prediction and analysis
  • Chemical education

Important Notes

  • Ensure the reaction is balanced
  • Use consistent units throughout
  • Molecular weights should be accurate
  • Mole amounts must be positive
  • Coefficients must be positive integers