# How is yield assessed in a chemical reaction?

May 3, 2017

"% yield"="Moles of product"/"Moles of reactant"xx100%

#### Explanation:

And this expression assumes that there is a 1:1 relationship between reactants and products, i.e.

$A \rightarrow B$

For some reactions, i.e.

$2 A + B \rightarrow C$,

we must appropriately weight the yield ratio so that it accurately reflects the given stoichiometry. Capisce?