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Percent yield compares the actual amount of product obtained in a reaction to the theoretical maximum (calculated from stoichiometry). It reflects efficiency and accounts for side reactions, incomplete reactions, and purification losses.

Trin-for-trin guide

1. 1Calculate theoretical yield from stoichiometry using limiting reagent
2. 2Weigh or measure actual product obtained
3. 3Percent yield = (Actual yield / Theoretical yield) × 100%

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