In: Chemistry
Consider the titration of a 50.00 mL aliquot of a water sample containing Fe3++ and Pb2++ with 19.62 mL of 0.00243 M EDTA to reach the end point. Excess CN- was added to a separate 20.00 mL aliquot of the same water sample, causing Fe(CN)3 to precipitate. This aliquot was titrated with 2.01 mL of 0.00243 M EDTA to reach the end point. What is the molarity of Fe3+ in the water sample?
Please explain every step. Thank you.