How to Calculate Theoretical & Percent Yield
Determine reaction limiting reagent and product yield step-by-step:
Enter Reactant Masses
Input weighed mass in grams for Reactant 1 and Reactant 2.
Convert to Moles
Divide reactant masses by their molar masses (n = m / M).
Identify Limiting Reagent
Compare mole ratios to determine which reactant is completely consumed first.
Calculate Yield
Compute theoretical maximum yield and percent yield = (Actual / Theoretical) × 100%.
Key Features & Synthetic Chemistry
Limiting Reagent Detection
Identifies limiting reactant and calculates excess unreacted leftover mass.
Theoretical Yield Mass
Calculates maximum possible product mass based on stoichiometry.
Percentage Yield Efficiency
Computes reaction efficiency based on actual isolated laboratory yield.
Chemical Stoichiometry Guide: Yield & Limiting Reagents
In synthetic chemical reactions, the Limiting Reagent is the reactant that is completely consumed first, limiting the amount of product formed.
The Theoretical Yield is the maximum amount of product predicted by stoichiometric calculations, while the Percent Yield measures actual synthesis efficiency:% Yield = (Actual Mass / Theoretical Mass) × 100%
Frequently Asked Questions
?Can percent yield exceed 100%?
Calculated percent yield above 100% usually indicates impurities, incomplete drying (retained solvent moisture), or experimental weighing errors.