Theoretical Yield Calculator Formula
Understand the math behind the theoretical yield calculator. Each variable explained with a worked example.
Formulas Used
Moles of Product
moles_product = moles_limiting * (coeff_product / coeff_limiting)Theoretical Yield
theoretical_yield = moles_limiting * (coeff_product / coeff_limiting) * molar_mass_productVariables
| Variable | Description | Default |
|---|---|---|
moles_limiting | Moles of Limiting Reagent(mol) | 0.5 |
coeff_limiting | Coefficient of Limiting Reagent | 1 |
coeff_product | Coefficient of Product | 1 |
molar_mass_product | Molar Mass of Product(g/mol) | 44.01 |
How It Works
How to Calculate Theoretical Yield
Formula
Yield = (moles_limiting × coeff_product / coeff_limiting) × Mw_product
First find moles of product from the mole ratio, then convert to grams.
Worked Example
0.5 mol of C reacts (1:1 ratio) to produce CO2 (44.01 g/mol).
- 01Moles product = 0.5 × (1/1) = 0.5 mol
- 02Yield = 0.5 × 44.01 = 22.005 g
Frequently Asked Questions
What is theoretical yield?
The maximum amount of product that can be formed from the limiting reagent, assuming 100% conversion.
Why is actual yield usually less?
Side reactions, incomplete reactions, and losses during purification all reduce actual yield below theoretical.
How do I find the mole ratio?
From the balanced chemical equation, the coefficients give the mole ratio between reactants and products.
Learn More
Guide
Stoichiometry Basics Guide
Learn the fundamentals of stoichiometry: mole ratios, mass-to-mass conversions, limiting reagents, theoretical yield, and percent yield with clear examples.
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Open Theoretical Yield Calculator