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Abs at wavelength 1 ( = Abs at wavelength 2 ( = Sample nm) nm) Cr* Ni2* Unknown Set up the equation for the two wavelengths using Beer's Law and calculate the concentrations of the metal ions in your unknown using two simultaneous equations: at wavelength 1: A1 = A1lccr + Ailcni at wavelength 2: A2 = A2lccr + AzlCNi

Abs at wavelength 1 ( = Abs at wavelength 2 ( = Sample nm) nm) Cr* Ni2* Unknown Set up the equation for the two wavelengths using Beer's Law and calculate the concentrations of the metal ions in your unknown using two simultaneous equations: at wavelength 1: A1 = A1lccr + Ailcni at wavelength 2: A2 = A2lccr + AzlCNi

Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter12: Atomic X-ray Spectrometry
Section: Chapter Questions
Problem 12.3QAP
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Abs at wavelength 1 (A = Abs at wavelength 2 (^ =, Sample nm) nm) Cr* Ni2+ Unknown Set up the equation for the two wavelengths using Beer's Law and calculate the concentrations of the metal ions in your unknown using two simultaneous equations: at wavelength 1: A1 = Ailccr + AılCNi at wavelength 2: A2 = A2lCcr + A2lCNi
Transcribed Image Text:Abs at wavelength 1 (A = Abs at wavelength 2 (^ =, Sample nm) nm) Cr* Ni2+ Unknown Set up the equation for the two wavelengths using Beer's Law and calculate the concentrations of the metal ions in your unknown using two simultaneous equations: at wavelength 1: A1 = Ailccr + AılCNi at wavelength 2: A2 = A2lCcr + A2lCNi
Unknown Absorbance STD CURVE Ni 500 650 Mixture: Compound Cr 0.5 M Compound Ni 0.5 M CONC (M) ABS ABS ABS @ 500 0.887 400 nm 0.078 0.213 0.1 0.074 0.091 ABS @ 650 1.078 450 nm 0.111 0.388 0.2 0.148 0.099 500 nm 0.154 0.432 0.4 0.408 0.108 550 nm 0.186 0.367 0.8 1.378 0.127 600 nm 0.264 0.216 1.6 2.413 0.145 650 nm 0.468 0.117 700 nm 0.284 0.087 STD CURVE Cr 500 650 750 nm 0.157 0.057 CONC (M) ABS ABS 800 nm 0.154 0.045 0.1 0.075 0.173 0.2 0.103 0.214 0.4 0.106 0.459 0.8 0.124 1.469 1.6 0.189 2.684
Transcribed Image Text:Unknown Absorbance STD CURVE Ni 500 650 Mixture: Compound Cr 0.5 M Compound Ni 0.5 M CONC (M) ABS ABS ABS @ 500 0.887 400 nm 0.078 0.213 0.1 0.074 0.091 ABS @ 650 1.078 450 nm 0.111 0.388 0.2 0.148 0.099 500 nm 0.154 0.432 0.4 0.408 0.108 550 nm 0.186 0.367 0.8 1.378 0.127 600 nm 0.264 0.216 1.6 2.413 0.145 650 nm 0.468 0.117 700 nm 0.284 0.087 STD CURVE Cr 500 650 750 nm 0.157 0.057 CONC (M) ABS ABS 800 nm 0.154 0.045 0.1 0.075 0.173 0.2 0.103 0.214 0.4 0.106 0.459 0.8 0.124 1.469 1.6 0.189 2.684
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