7. The concentration of cobalt and nickel can be determined simultaneously upon complexation to 8-hydroxyquinolin. The molar absorptivities of the complexes at two wavelengths are given in the table below. Molar Absorptivity (ɛ) 475 nm 700 nm Co 3529 428.9 Ni 3228 10.20 Calculate the concentrations (mol/L) of nickel and cobalt in each of the following solutions. Measured Absorbance (1.25 cm cell) Solution 475 nm 700 nm 1 0.602 0.044 0.796 0.027

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Calculate the concentrations (mol/L) of nickel and cobalt in each of the following solutions.

7. The concentration of cobalt and nickel can be determined simultaneously upon complexation to 8-hydroxyquinolin.
The molar absorptivities of the complexes at two wavelengths are given in the table below.
Molar Absorptivity (ɛ)
475 nm
700 nm
Co
3529
428.9
Ni
3228
10.20
Calculate the concentrations (mol/L) of nickel and cobalt in each of the following solutions.
Measured Absorbance (1.25 cm cell)
Solution
475 nm
700 nm
1
0.602
0.044
0.796
0.027
Transcribed Image Text:7. The concentration of cobalt and nickel can be determined simultaneously upon complexation to 8-hydroxyquinolin. The molar absorptivities of the complexes at two wavelengths are given in the table below. Molar Absorptivity (ɛ) 475 nm 700 nm Co 3529 428.9 Ni 3228 10.20 Calculate the concentrations (mol/L) of nickel and cobalt in each of the following solutions. Measured Absorbance (1.25 cm cell) Solution 475 nm 700 nm 1 0.602 0.044 0.796 0.027
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