Limiting reagent calculator
Find the limiting reactant for two species using moles and stoichiometric coefficients; shows extent and leftovers.
Calculator
How to use
Limiting reagent (two reactants)
Extent of reaction:
$$\xi = \min\left(\frac{n_1}{a},;\frac{n_2}{b}\right)$$
The smaller scaled amount identifies the limiting reactant.
When to use
- Predicting how far a reaction goes before an excess is left.
- Setting up theoretical yield from the limiting species.
Educational use only. Double-check values for labs, homework, and exams.