Free Percent Yield Calculator
Calculate the percent yield of a chemical reaction from actual and theoretical product amounts.
Percent Yield
70.00 %
Percent Yield vs Actual Yield
Percent Yield
Percent yield measures how efficient a chemical reaction is by comparing the actual product obtained to the maximum amount theoretically possible.
Formula
% Yield = (Actual Yield / Theoretical Yield) × 100
Theoretical yield is calculated from stoichiometry using the limiting reagent. Percent yields below 100% are caused by incomplete reactions, side reactions, and losses during purification.
Example Calculation
A synthesis produces 3.5 g of product from a theoretical maximum of 5.0 g.
- 01% Yield = (3.5 / 5.0) × 100 = 70.00%
- 02Product lost = 5.0 - 3.5 = 1.5 g
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