The atom economy of a chemical reaction is a measure of the amount of starting materials that become useful products.
% atom economy = (Mass of desired product / Total mass of reactants) * 100
In practice, it is not always possible to get the calculated amount of product in a reaction:
- reversible reactions may not go to completion
- some product may be lost when it is removed from the reaction mixture
- some of the reactants may react in an unexpected way
The yield of a reaction is the actual mass of product obtained.
% Yield = (Actual mass of product / theoretical mass of product) * 100
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