135k views
0 votes
A % yield < 100 can be explained by losses and side reactions. how could you accountn for a % yield > 100

1 Answer

3 votes
Percent yield is expected to be less than 100% because it is:

Percent yield = [actual yield / theoretical yield] × 100

The theoretical yield is calcualted from the stoichiometry of the chemical equation, then the actual yield cannot be greater than the theoretical yield.

A theoretical yield greater than 100% is indication of an error.

Two errors can be thought:

- A wrong measurement of the amounts of reactants or products

- The presence of impurities in the reactants that lead to the actual mass is greater than the mass if the reactant is pure.





User Diogo Barroso
by
8.5k points

No related questions found