Question

5. (3 pts) Consider two absorbers, compound A and compound B. When measured individually within a 1.0 cm cuvette the following data were obtained: Compound Concentration (M) $A_{D=475 nm}$ $A_{D=700 nm}$ A $7.50 \times 10^{-5}$ 0.155 0.755 B $4.25 \times 10^{-5}$ 0.702 0.091 Calculate the concentrations of a mixture containing compound A and compound B that, when measured using a 1.0 cm cuvette, yielded absorbances of 0.439 at 475 nm and 1.025 at 700 nm.

          5. (3 pts) Consider two absorbers, compound A and compound B. When measured individually within a 1.0 cm cuvette the following data were obtained:

Compound	Concentration (M)	$A_{D=475 nm}$ 	$A_{D=700 nm}$
A	$7.50 \times 10^{-5}$ 	0.155	0.755
B	$4.25 \times 10^{-5}$	0.702	0.091

Calculate the concentrations of a mixture containing compound A and compound B that, when measured using a 1.0 cm cuvette, yielded absorbances of 0.439 at 475 nm and 1.025 at 700 nm.

5. (3 pts) Consider two absorbers, compound A and compound B. When measured individually within a 1.0 cm cuvette the following data were obtained:

Compound Concentration (M) AD=475 nm AD=700 nm
A 7.50 × 10^-5 0.155 0.755
B 4.25 × 10^-5 0.702 0.091

Calculate the concentrations of a mixture containing compound A and compound B that, when measured using a 1.0 cm cuvette, yielded absorbances of 0.439 at 475 nm and 1.025 at 700 nm.

Added by Tiffany O.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adi S

12/28/2023

Step 1

Compound A at 475nm: ε_A475 = A_A475 / (c_A * l) ε_A475 = 0.155 / (7.50 x 10^-5 * 1.0) = 2066.67 L mol^-1 cm^-1 Compound A at 700nm: ε_A700 = A_A700 / (c_A * l) ε_A700 = 0.755 / (7.50 x 10^-5 * 1.0) = 10066.67 L mol^-1 cm^-1 Compound B at 475nm: ε_B475 = A_B475 Show more…

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Consider two absorbers, compound A and compound B. When measured individually within a 1.0 cm cuvette the following data were obtained: (3 pts) Consider two absorbers, compound A and compound B. When measured individually within a 1.0cm cuvette the following data were obtained: Calculate the concentrations of a mixture containing compound A and compound B that, when measured using a 1.0cm cuvette, yielded absorbances of 0.439 at 475nm and 1.025 at 700nm. 5. (3 pts) Consider two absorbers, compound A and compound B. When measured individually within a 1.0 cm cuvette the following data were obtained: Compound A B Concentration (M) 7.50x 10-5 4.25 x 10-5 Ag=475 nm 0.155 0.702 Ag=700 nm 0.755 0.091 1.0 cm cuvette, yielded absorbances of 0.439 at 475 nm and 1.025 at 700 nm.