A

Actual Yield

% yield = (actual yield / theoretical yield) × 100%
Quick Reference
Formula / Notation% yield = (actual yield / theoretical yield) × 100%
Also Known AsExperimental yield; observed yield; isolated yield; obtained yield

What is Actual Yield?

The actual yield is the amount of product that is experimentally obtained from a chemical reaction. It is always less than or equal to the theoretical yield (the maximum amount calculated from stoichiometry) due to side reactions, incomplete reactions, product loss during purification, and other practical limitations.

Formula & Notation

% yield = (actual yield / theoretical yield) × 100%

Other Names / Synonyms: Experimental yield; observed yield; isolated yield; obtained yield

Properties & Characteristics

Always ≤ theoretical yield; measured in grams or moles; used to calculate percent yield; affected by reaction completion, side reactions, losses during isolation and purification; a key measure of synthetic efficiency

Uses & Applications

Evaluating efficiency of synthetic reactions; industrial process optimisation; pharmaceutical and chemical manufacturing quality control; academic and research chemistry reporting

Safety Information

No direct hazard — a calculation concept. The actual chemical products recovered may be hazardous depending on the reaction; always handle reaction products according to their specific safety data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Actual Yield
Formula % yield = (actual yield / theoretical yield) × 100%
Synonyms Experimental yield; observed yield; isolated yield; obtained yield

Frequently Asked Questions

The actual yield is the amount of product that is experimentally obtained from a chemical reaction. It is always less than or equal to the theoretical yield (the maximum amount calculated from stoichiometry) due to side reactions, incomplete reactions, product loss during purification, and other practical limitations.

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