(a) Interpretation: The concentrations of A and B in solution should be determined that yielded absorbance 0.439 at 475 nm and 1.025 at 700 nm. Concept introduction: The Beer-Lambert Law is: A = ε l c A − absorbance ε - molar absorptivity l − length of the solution light passes through (cm) c − concentration of solution (mol/L)

Question

When measured in a 1.00 cm cuvette, a 4.1x10M solution of species X exhibited absorbances of 0.1025 and 0.533 at 530 nm and 325 nm, respectively. A8.20x10 M solution of species Y gave absorbances of 0.230 and 0.508 at 530 nm and 325 nm, respectively. Both species were dissolved in the same solvent, and the solvent's absorbance was 0.000 and 0.000 at 530 nm and 325 nm, respectively, in a 1 cm cuvette. Calculate the concentrations of X and Y in an unknown solution that yielded absorbance data of 0.683 at 530 nm and 1.351 at 325 nm in a 1.0 em cuvete O A.X-4.20 x10 M Y=3.20 x104 M OBX-1.25 X10M Y420 x10-SM OCX-3.75x1oM Y-1 A10M OD.X-3.80 x 10M Y=2.10x10M

Answer 1

Question

Chapter 14, Problem 14.9QAP

Interpretation Introduction

(a)

Interpretation:

The concentrations of A and B in solution should be determined that yielded absorbance 0.439 at 475 nm and 1.025 at 700 nm.

Concept introduction:

The Beer-Lambert Law is:

A=εlc

A − absorbance

ε - molar absorptivity

l − length of the solution light passes through (cm)

c − concentration of solution (mol/L)

Interpretation Introduction

(b)

Interpretation:

The concentrations of A and B in solution should be determined that yielded absorbance 0.662 at 475 nm and 0.815 at 700 nm.

Concept introduction:

The Beer-Lambert Law is:

A=εlc

A − absorbance

ε - molar absorptivity

l − length of the solution light passes through (cm)

c − concentration of solution (mol/L)

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When measured in a 1.00 cm cuvette, a 4.1x10M solution of species X exhibited absorbances of 0.1025 and 0.533 at 530 nm and 325 nm, respectively. A8.20x10 M solution of species Y gave absorbances of 0.230 and 0.508 at 530 nm and 325 nm, respectively. Both species were dissolved in the same solvent, and the solvent's absorbance was 0.000 and 0.000 at 530 nm and 325 nm, respectively, in a 1 cm cuvette. Calculate the concentrations of X and Y in an unknown solution that yielded absorbance data of 0.683 at 530 nm and 1.351 at 325 nm in a 1.0 em cuvete O A.X-4.20 x10 M Y=3.20 x104 M OBX-1.25 X10M Y420 x10-SM OCX-3.75x1oM Y-1 A10M OD.X-3.80 x 10M Y=2.10x10M

When measured in a 1.00 cm cuvette, a 4.1x10M solution of species X exhibited absorbances of 0.1025 and 0.533 at 530 nm and 325 nm, respectively. A 8.20x10 M solution of species Y gave absorbances of 0.230 and 0.508 at 530 nm and 325 nm, respectively. Both species were dissolved in the same solvent, and the solvent's absorbance was 0.000 and 0.000 at 530 nm and 325 nm, respectively, in a 1 cm cuvette. Calculate the concentrations of X and Y in an unknown solution that yielded absorbance data of 0,683 at 530 nm and 1.351 at 325 nm in a 1.0 cm cuvette A. X= 4.20 X10M Y=3.20 x10+M O B. X1.25 X10M Y= 4.20 x10-5M OCX-3.75X10M Y-1 4x10M OD.X-3.80 x 10 M Y 2.10K10M

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