1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample inconcentrated HCI, giving a mixture of Fe2+ and Fe³+. After adding HNO3 to oxidize any Fe2+to Fet, the resulting solution was diluted with water and the Fe+ precipitated as Fe(OH)3by adding NH3. After filtering and rinsing, the residue was ignited, resulting to 0.8525 g ofpure Fe2O3. Calculate the:a) % (w/w) Feb) % (w/w) Fe;O4 in the sample.

Amount of Ore obtained Fe=0.8525g Reaction involved Fe3O4 + 8HCl ---------- Fe+2+2Fe+3 4Fe3O4 +…

Answered: 1. A sample containing magnetite,…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Iron was analyzed by dissolving 1.1324 g sample in concentrated HCL The solution was diluted in H2O, Fe(1II) was precipitated as Fe203.H20 by adding NH3. After filteration, washing the residue ignited to give 0.2697 g of pure Fe2O3 (159.69 g/mol). Calculate %Fe (55.847g/mol) in the sample. O 69.12 % O 16.66 % O 33.32 % O 45.21 % O 54.21 %
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