Percent Yield Calculator
Calculate Percent Yield
Calculate Actual Yield
Calculate Theoretical Yield
From limiting reagent mass and stoichiometry
Formula
% Yield = (actual yield / theoretical yield) × 100 | Theoretical yield = (mol limiting / coeff) × coeff product × MM product
Frequently Asked Questions
What is percent yield?
Percent yield = (actual yield / theoretical yield) × 100. It measures the efficiency of a chemical reaction. A 100% yield means all reactants converted to product. Typical lab yields range from 50-90%.
Why is percent yield less than 100%?
Reasons include: incomplete reactions (equilibrium), side reactions forming byproducts, loss during purification/transfer, impure reagents, and measurement errors.
Can percent yield exceed 100%?
A percent yield over 100% indicates error: impure product (contains solvent or byproducts), measurement mistake, or incomplete drying. True yields cannot exceed 100%.
You may also need
A
Limiting Reagent Calculator
Free limiting reagent calculator. Determine the limiting reactant, excess reagent, and theoretical yield for chemical reactions.
ScienceA
Molar Mass Calculator
Free molar mass calculator. Calculate the molecular weight of chemical compounds from their formula. Supports common elements and parenthetical groups.
ScienceA
Molarity Calculator
Free molarity calculator. Calculate molarity, moles, volume, or molar mass for chemistry solutions.
Science