How to use the theoretical yield calculator
Find product mass formed from a limiting reactant. Enter mass of reactant, molar mass of reactant, reactant coefficient, product coefficient, molar mass of product in the fields above; the moles of reactant, moles of product, theoretical yield are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- mA — Mass of reactant (g)
- MA — Molar mass of reactant (g/mol)
- cA — Reactant coefficient
- cP — Product coefficient
- Mprod — Molar mass of product (g/mol)
Worked example
With mass of reactant = 10 g, molar mass of reactant = 36.46 g/mol, reactant coefficient = 2, product coefficient = 1, molar mass of product = 58.44 g/mol, the calculator gives moles of reactant ≈ 0.2742732 mol; moles of product ≈ 0.1371366 mol; theoretical yield ≈ 8.014262 g.
Frequently asked questions
What is the formula for the theoretical yield calculation?
Moles of reactant (mol) = mA / MA. Moles of product (mol) = [Moles of reactant] × cP / cA. Theoretical yield (g) = [Moles of product] × Mprod. Here mA is mass of reactant (g), MA is molar mass of reactant (g/mol), cA is reactant coefficient, cP is product coefficient, Mprod is molar mass of product (g/mol).
What inputs do I need for the theoretical yield calculator?
You need mass of reactant in g, molar mass of reactant in g/mol, reactant coefficient, product coefficient, molar mass of product in g/mol. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.