Percent Yield Calculator
Compare actual yield to theoretical yield to get reaction efficiency, with the gap expressed in grams and percent.
Percent yield (%)
78.67
Detalhamento
- Assessment
- Good
- Missing mass (g)
- 3.20
Última atualização:
FAQ
What is the percent yield formula?
Percent yield = (actual yield ÷ theoretical yield) × 100. The theoretical yield comes from stoichiometry — the maximum product possible if every limiting reagent converts — while the actual yield is what you isolated.
Why is percent yield rarely 100%?
Side reactions, incomplete conversion, product left on glassware or filter paper, and purification losses all shave the result. Well-optimized reactions reach 80–95%; anything consistently below 60% usually hints at a procedural problem.
Can percent yield exceed 100%?
Chemically it cannot — a value above 100% means the product is contaminated (residual solvent, unreacted starting material, or wet sample) and the 'actual yield' is overstated.
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