A sample of mixture of FeSO4.(NH4)2So4.6H2O and inert materialis dissolved in water, and the Fe is oxidized with bromine water.The excess Br2 is boiled out and NH4OH is added to precipitate theFe(III). This precipitate, after ignition, weighs 0.160 g.Calculate a) the volume of the NH4OH (specific gravity 0.960,containing 10.0% Nh3 by weight) theoretically required in the abovepreecipitaion? b) The volume of 0.100 N BaCl2 solution required toprecipitate the sulfate from the filtrate of the NH4OHprecipitation.
