A sample of slag (ore tailings) from a blast furnace was analyzed to determine the SiO2 content. A sample of 0.5003 g of slag was decomposed with HCl, leaving a solid residue with a mass of 0.1414 g. The residue was subsequently treated with HF and H2SO4 and heated to convert all the SiO2 present in the sample to SiF4, which is volatile and was evaporated leaving a residue with a mass of 0.0183 g. Determine the percentage by mass (% m/m) of SiO2 in the sample.

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Answered: A sample of slag (ore tailings) from a…

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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A sample of slag (ore tailings) from a blast furnace was analyzed to determine the SiO₂ content. A sample of 0.5003 g of slag was decomposed with HCl, leaving a solid residue with a mass of 0.1414 g. The residue was subsequently treated with HF and H₂SO₄ and heated to convert all the SiO₂ present in the sample to SiF₄, which is volatile and was evaporated leaving a residue with a mass of 0.0183 g. Determine the percentage by mass (% m/m) of SiO₂ in the sample.

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