(Answered) Exactly 10065 g of an unknown solid containing fe2so43 and

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Exactly 1.0065 g of an unknown solid containing Fe2(SO4)3 and non-ionogenic impurities was dissolved in about 25 mL of water and placed on a column of Rexyn 101 ion exchange resin. The column was then eluted with 200 mL of water and the total eluent collected in a 250 mL volumetric flask and diluted to the mark with water. When a 50 mL aliquot of this solution was titrated, 11.35 mL of 0.10359 M NaOH solution was required to reach the end point. Calculate the percentage of Fe2(SO4)3 in the unknown solid.

This is the answer: 38.93% Fe2(SO4)3.

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