Posted by El on .
if 1.00 g of silver nitrate is combined with 1.00g of sodium chloride what is the mass of the solid if you have 75% yield?
First determine limiting reagent.
AgNO3 + NaCl ==> AgCl + NaNO3
mols AgNO3 = grams/molar mass
mols NaCl = grams/molar mass
Convert mols AgNO3 to mols AgCl using the coefficients in the balanced equation.
Do the same for NaCl.
It is likely these two values will not agree which means one of them is wrong. The correct answer in limiting reagent problems is ALWAYS the smaller value and the reagent responsible for that number is the limiting reagent.
Using the smaller number, convert to grams AgCl. g AgCl = mols AgCl x molar mass AgCl. This is the theoretical yield; i.e., yield at 100%.
Theoretical yield x 0.75 = amount produced at 75% yield.