How to use this calculator
- Enter the chemical equation.
- Enter one known reactant formula, quantity, and unit.
- Enter the desired product formula and select its mass unit.
- Calculate and review the balanced coefficient ratio and product mass.
Formula and variables
product moles = reactant moles x product coefficient / reactant coefficient
| Symbol | Meaning | Unit |
|---|---|---|
| n | amount | mol |
| nu | stoichiometric coefficient | integer |
Worked example
2 mol H2 with coefficients 2 H2 : 2 H2O can theoretically produce 2 mol H2O, about 36.03 g.
Interpretation
Theoretical yield assumes the supplied reactant is fully available for the stated reaction and no competing loss occurs.
Common mistakes
- Use coefficients from a verified balanced equation.
- Do not confuse theoretical and actual yield.
Frequently asked questions
Do I need to balance the equation first?
No. The calculator balances the equation and uses the verified coefficients.
Can I enter reactant mass instead of moles?
Yes. Enter a mass, amount, or particle count for the known reactant.
What does theoretical yield assume?
It assumes complete conversion by the stated reaction with no product loss or side reaction.
Can I use scientific notation?
Yes. Enter values such as 6.022e23 or 1.0e-6 in a numeric field.
How should I round the result?
Keep extra digits during the calculation. Round the final result to the precision required by your data.