mols NaOH = grams/molar mass = 0.03875
mols HCl = M x L = 0.0375
The difference will tell you that NaOH is in excess and by how many mols.
Then M NaOH = mols/L.
Identify the excess reactant (HCl or NaOH) and its molar concentration when 1.55 g of NaOH is stirred into 150.0 mL of 0.250 M HCl.
1 answer