Theoretical Yield Calculator
Enter reactant moles and stoichiometric coefficients to identify the limiting reactant and compute theoretical product yield.
Reactant data
Product data
Results
Limiting reactant
Reactant 1
Theoretical yield (moles)
1
Theoretical yield (mass)
180.16 g
How to Use This Calculator
Convert reactant quantities to moles
If starting from masses, divide by molar mass to determine moles for each reactant.
Enter stoichiometric coefficients
Use coefficients from the balanced chemical equation for each reactant and product.
Identify limiting reactant
The calculator divides moles by coefficients to determine which reactant is limiting.
Calculate theoretical yield
The product moles and mass are derived from the limiting reactant and product stoichiometry.
Formula
Limiting = min(molesᵢ / νᵢ)
n_product = limiting × ν_product
νᵢ are stoichiometric coefficients. Multiply product moles by molar mass to obtain grams.
Example
For 0.5 mol A and 0.8 mol B (both ν = 1), A is limiting, producing 0.5 × 2 = 1.0 mol product.
Full Description
Theoretical yield represents the maximum possible amount of product that can be generated from given reactant quantities. Identifying the limiting reactant ensures that stoichiometric conversions reflect real reagent limitations.
This calculator streamlines the process, highlighting the limiting reagent and providing both molar and mass-based product yields.
Frequently Asked Questions
Can the calculator handle more than two reactants?
Yes. Add additional reactants using the “Add reactant” button.
What if reactant data is in grams?
Convert to moles by dividing by molar mass before entering values.
Can percent purity be considered?
Adjust the input moles to reflect purity before using the calculator.
How precise is the ratio reduction?
Ratios are normalized to the smallest value and rounded to three decimals. Adjust manually if higher precision is required.
Does the calculator check mass balance?
No. Ensure your reaction is correctly balanced before use.