posted by Tiffany .
A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH, what is the molar mass of the acid?
mols NaOH = M x L = ?
Since this is a monoprotic acid, mols NaOH = mols HA.
mols HA = grams/molar mass
You know mols and grams, solve for molar mass