Calculateur de Réactif Limitant
Identifiez le réactif limitant d'une réaction chimique.
mol
mol
Moles/Coefficient for A
2.0000
Moles/Coefficient for B1.5000
Moles/Coefficient for A vs Moles of Reactant A
Formule
## How to Find the Limiting Reagent ### Method Divide the moles of each reactant by its stoichiometric coefficient. The reactant with the **smallest ratio** is the limiting reagent. **Ratio = moles / coefficient**
Exemple Résolu
2 mol A and 3 mol B react with coefficients 1A + 2B.
- 01Ratio A = 2 / 1 = 2
- 02Ratio B = 3 / 2 = 1.5
- 03B has the smaller ratio, so B is the limiting reagent
Questions Fréquentes
What is a limiting reagent?
The reactant that runs out first, determining the maximum amount of product that can form.
What happens to the excess reagent?
It is left over after the reaction completes. The remaining amount equals initial minus consumed.
Why compare ratios instead of moles?
Reactants are consumed in stoichiometric proportions, not 1:1. The ratio accounts for different coefficients.
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