Na2SO4 + BaCl2 ==> BaSO4 + 2NaCl
mols Na2SO4 = M x L = ?
mols BaCl2 needed = same as mols Na2SO4 since the reaction coefficients are 1 mol Na2SO4 to 1 mol BaCl2.
Then M BaCl2 = mols BaCl2/L BaCl2. You know M and mols, solve for L and convert to mL.
How many milliliters of 0.150M BaCl2 are needed to react completely with 40.0mL of 0.260M Na2SO4?
1 answer