unit 9 chem (stoichiometry)

mole ratios

derived from the coefficients of a balanced chemical equation

limiting and excess reactant

limiting: the reactant that is completely consumed first

excess: the reactant that remains after reaction is complete

yield (percent, actual, and theoretical)

actual: the amount of product obtained from lab data

theoretical: the amount of product obtained from stoichiometry

percent = actual/theoretical x 100

yield

the amount of product obtained in a chemical reaction