5. The sulfate in 186.5 mg sample was precipitated as BaSO, by addition of 32.00 mL of 0.0340 M BaCI,. The precipitate was removed by filtration and the remaining BaCl, consumed 37.5 mL of 0.0200 M EDTA for titration to the end point. Calculate the % SO, in the sample. (MW of SO, is 80.06 g/mol)