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Cu Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (ppm) 0.0522 0.1013 1 0.0521 0.0520 0.1012 2 0.1011 3 0.1576 0.1578 0.1577 4 0.2119 0.2120 0.2121 5 0.2688 0.2681 0.2685 Unknown Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD sample Water 0.1649 0.1648 0.1701 sample 1 (1:10 dilution) Cr Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (ppm) 1 0.0420 0.0419 0.0778 0.0425 2 0.0780 0.0779 3 0.1040 0.1043 0.1041 4 0.1368 0.1369 0.1372 0.1646 0.1647 0.1649 Unknown Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD sample Tap Water sample 1 (1:20 dilution) 0.0488 0.0489 0.0501

Cu Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (ppm) 0.0522 0.1013 1 0.0521 0.0520 0.1012 2 0.1011 3 0.1576 0.1578 0.1577 4 0.2119 0.2120 0.2121 5 0.2688 0.2681 0.2685 Unknown Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD sample Water 0.1649 0.1648 0.1701 sample 1 (1:10 dilution) Cr Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (ppm) 1 0.0420 0.0419 0.0778 0.0425 2 0.0780 0.0779 3 0.1040 0.1043 0.1041 4 0.1368 0.1369 0.1372 0.1646 0.1647 0.1649 Unknown Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD sample Tap Water sample 1 (1:20 dilution) 0.0488 0.0489 0.0501

Chemistry
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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Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples.

Provide appropriate discussion to determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample.

Cu Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (ppm) 1 0.0521 0.0520 0.0522 2 0.1011 0.1012 0.1013 3 0.1576 0.1578 0.1577 4 0.2119 0.2120 0.2121 5 0.2688 0.2681 0.2685 Unknown Absorbance l Absorbance 2 Absorbance 3 Mean + SD sample Water 0.1649 0.1648 0.1701 sample 1 (1:10 dilution) Cr Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (рpm) 1 0.0419 0.0425 0.0420 2 0.0778 0.0780 0.0779 3 0.1040 0.1043 0.1041 4 0.1368 0.1369 0.1372 0.1649 Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD 0.1646 0.1647 Unknown sample Tap Water sample 1 (1:20 dilution) 0.0488 0.0489 0.0501
Transcribed Image Text:Cu Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (ppm) 1 0.0521 0.0520 0.0522 2 0.1011 0.1012 0.1013 3 0.1576 0.1578 0.1577 4 0.2119 0.2120 0.2121 5 0.2688 0.2681 0.2685 Unknown Absorbance l Absorbance 2 Absorbance 3 Mean + SD sample Water 0.1649 0.1648 0.1701 sample 1 (1:10 dilution) Cr Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD standard (рpm) 1 0.0419 0.0425 0.0420 2 0.0778 0.0780 0.0779 3 0.1040 0.1043 0.1041 4 0.1368 0.1369 0.1372 0.1649 Absorbance 1 Absorbance 2 Absorbance 3 Mean + SD 0.1646 0.1647 Unknown sample Tap Water sample 1 (1:20 dilution) 0.0488 0.0489 0.0501
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