Free · Chemical reactions calculators 💥

Limiting-Reactant Stoichiometric Product Yield

Calculate theoretical product amount and mass from a known limiting reactant and balanced reaction coefficients.

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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

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Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

A 10 g limiting reactant with molar mass 50 g/mol contains 0.2 mol. A 1:2 reactant-to-product coefficient ratio gives 0.4 mol of product, or 40 g at 100 g/mol.

Product amount = limiting-reactant amount × product coefficient / reactant coefficient; mass = amount × molar mass

Worked example

Enter these known values and leave the other values blank.

Known limiting-reactant mass
10 g
Limiting-reactant molar mass
50 g/mol
Reactant coefficient in balanced equation
1
Product coefficient in balanced equation
2
Product molar mass
100 g/mol
Limiting-reactant amount
0.2 mol
Theoretical product amount
0.4 mol
Theoretical product mass
40 g

Assumptions and limitations

  • All quantities and coefficients are positive. Supply a balanced equation and identify the limiting reactant before using this tool.
  • Coefficients are relative stoichiometric numbers; multiplying both by the same positive factor leaves the result unchanged.
  • The result assumes complete conversion along the specified reaction with sufficient other reactants. Purity, side reactions and recovery losses are not inferred.

Common questions

Does the calculator identify the limiting reactant?

No. Determine the limiting reactant from the amounts of all reactants, then enter that reactant here.

Is theoretical yield the mass I will recover?

It is the stoichiometric maximum for the supplied model. Actual recovery may be lower, and an impure recovered sample may give a misleading apparent mass.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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