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find the true concentration of Fe²+ of the original sample. A) 5.12 ppm B) 2.56 ppm C) 5.05 ppm D) 2.52 ppm

find the true concentration of Fe²+ of the original sample. A) 5.12 ppm B) 2.56 ppm C) 5.05 ppm D) 2.52 ppm

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter11: Solutions
Section: Chapter Questions
Problem 10P
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find the true concentration of Fe²+ of the original sample. A) 5.12 ppm B) 2.56 ppm C) 5.05 ppm D) 2.52 ppm
Reagent Blank Absorbance Reagent Blank Absorbance Concentration of Stock Solution: 10 ppm Volume of Stock Solution (mL) Total Volume of Standard Solution (mL) 0.50 10.00 1.00 10.00 2.00 10.00 3.00 10.00 4.00 10.00 5.00 10.00 Trial Volume of Unknown Solution (mL) 1 5.00 2 5.00 3 5.00 Absorbance (au) 0.003 Concentration of Standard Solution (ppm) Total Volume of Unknown Solution (mL) 10.00 10.00 10.00 Absorbance (au) 0.012 0.132 0.267 0.349 0.428 0.560 Absorbance (au) 0.289 0.296 0.281
Transcribed Image Text:Reagent Blank Absorbance Reagent Blank Absorbance Concentration of Stock Solution: 10 ppm Volume of Stock Solution (mL) Total Volume of Standard Solution (mL) 0.50 10.00 1.00 10.00 2.00 10.00 3.00 10.00 4.00 10.00 5.00 10.00 Trial Volume of Unknown Solution (mL) 1 5.00 2 5.00 3 5.00 Absorbance (au) 0.003 Concentration of Standard Solution (ppm) Total Volume of Unknown Solution (mL) 10.00 10.00 10.00 Absorbance (au) 0.012 0.132 0.267 0.349 0.428 0.560 Absorbance (au) 0.289 0.296 0.281
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