1:25 3O bigåro - HW 3 HW 3 Instrumental analysis CHM 311 The Molar absorptivities for the ions of nickel and cobalt complexed with 8-hydroxyquinoline are shown in the table below at two wavelengths Molar absorptivity (8) at 700 nm 365 nm Ni -complex Co- complex 10 3228 429 3529 a) What is the absorbance of solution ( mixture) consists of 9 x10 4 M Ni?+ and 2x10+ M Co2+ using a 1cm cuvette at 700 nm b) What is the absorbance of solution ( mixture) consists 9 x10 -5 M Ni?+ and 2×10-5 M Co2+ using a 1cm cuvette at 365 nm ...
1:25 3O bigåro - HW 3 HW 3 Instrumental analysis CHM 311 The Molar absorptivities for the ions of nickel and cobalt complexed with 8-hydroxyquinoline are shown in the table below at two wavelengths Molar absorptivity (8) at 700 nm 365 nm Ni -complex Co- complex 10 3228 429 3529 a) What is the absorbance of solution ( mixture) consists of 9 x10 4 M Ni?+ and 2x10+ M Co2+ using a 1cm cuvette at 700 nm b) What is the absorbance of solution ( mixture) consists 9 x10 -5 M Ni?+ and 2×10-5 M Co2+ using a 1cm cuvette at 365 nm ...
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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Transcribed Image Text:1:25 3O
bigåro - HW 3
HW 3
Instrumental analysis CHM 311
The Molar absorptivities for the ions of nickel and
cobalt complexed with 8-hydroxyquinoline are shown
in the table below at two wavelengths
Molar absorptivity (8) at
700 nm
365 nm
Ni -complex
Co- complex
10
3228
429
3529
a) What is the absorbance of solution ( mixture )
consists of 9 x10 4 M Ni2+ and 2x10+ M Co2+
using a 1cm cuvette at 700 nm
b) What is the absorbance of solution ( mixture )
consists 9 x10 -5 M Ni2+ and 2×10-5 M Co2+ using a
1cm cuvette at 365 nm
c) Unknown mixture of Co2+ and Ni 2+ions
complexed with 8-hydroxyquinoline has an
absorbance of 0.072 at 700 nm and 0.090 at
365nm, what is the composition of mixture?
...
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