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

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.5QAP

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