If 70.0g nitric acid reacts with 100.0g barium hydroxide what mass of salt may be obtained? If a student collects 138 g of this salt, what is the % yield?
Theoretical maximum salt mass possible is
Actual % yield obtained is
This is an acid-base neutralization/titration reaction and the balanced chemical equation is
Since a balanced chemical equation represents the mole ratio in which chemicals react, we now first convert all the reactants to moles.
According to the balanced equation, 2 moles of the acid (nitric acid) produces 1 mole of the salt (barium nitrate).
Hence by ratio and proportion,
This will correspond to a mass of salt of
Hence the percentage yield is