Chemistry / Chem 0486 · Atom · ~20 seconds
Percent Yield
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Percent yield is the actual yield obtained from a reaction divided by its theoretical yield, expressed as a percentage.
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A reaction with a theoretical yield of 50.0 g that actually produces 42.5 g has a percent yield of 85.0%.
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A percent yield above 100% signals a measurement or purity problem, such as leftover solvent, not a reaction that beat its own ceiling.