Track extent, conversion, yield, and completion confidently quickly. Review limiting reagent effects with simple inputs. Built for practical reaction checks across labs and classrooms.
Enter stoichiometric coefficients and measured amounts for two reactants plus one product. The calculator estimates completion, conversion, and yield.
This sample shows one possible reaction completion check using measured starting and remaining amounts.
| Reaction | Reactant 1 | Reactant 2 | Product | Coefficients | Initial Amounts | Remaining Amounts | Actual Product |
|---|---|---|---|---|---|---|---|
| A + 2B → C | A | B | C | 1 : 2 : 1 | A = 5.0, B = 12.0 | A = 1.0, B = 4.0 | 3.8 |
| X + Y → Z | X | Y | Z | 1 : 1 : 1 | X = 2.5, Y = 3.0 | X = 0.5, Y = 1.0 | 1.9 |
| Step 1 | Enter a reaction label and name both reactants and the main product. |
|---|---|
| Step 2 | Supply stoichiometric coefficients exactly as written in the balanced reaction. |
| Step 3 | Enter initial and remaining amounts for each reactant using the same units or basis. |
| Step 4 | Optionally add actual product formed and a target completion percentage. |
| Step 5 | Submit the form to view completion, conversion, limiting reagent, yield, and additional amounts needed. |
| Step 6 | Use the export buttons to download CSV summaries or a PDF snapshot. |
It estimates how far the reaction progressed relative to the maximum possible stoichiometric extent, based on the entered reactant consumption values.
Remaining amounts let the page estimate how much each reactant was consumed, which is needed to compute observed reaction extent and conversion.
The calculator divides each initial reactant amount by its stoichiometric coefficient. The smaller value determines the limiting reagent.
Yes, but convert grams to moles first if you need chemically correct stoichiometric results. Stoichiometric coefficients relate directly to molar amounts.
It compares normalized extents from both reactants. A lower match can indicate measurement error, side reactions, impurities, or nonideal sampling.
That usually signals measurement error, wet product, impurities, calibration issues, or an incorrect balanced equation or basis conversion.
It compares your entered initial reactant ratio with the required stoichiometric ratio. Values above one suggest extra Reactant 2 relative to stoichiometric demand.
Yes. It is useful for classroom demonstrations, lab reports, process checks, and quick stoichiometric completion reviews using a simple interface.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.