---
title: "A student prepares a solution of a tracer dye used to monitor water flow. The student obtains the following data at the wavelength of maximum absorbance.  | Dye concentration | Cuvette path length | Absorbance | |—|—|—| | \\(2.00 \\times 10^{-5}\\text{ M}\\) | \\(2.00\\text{ cm}\\) | \\(0.800\\) |  The Beer-Lambert relationship is \\(A=\\varepsilon bc\\), where \\(\\varepsilon\\) is the molar absorptivity. What is the molar absorptivity of the dye?"
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url: "https://nerd-notes.com/ubq/119353/"
date_modified: "2026-08-19T12:39:56+00:00"
---

# A student prepares a solution of a tracer dye used to monitor water flow. The student obtains the following data at the wavelength of maximum absorbance.

| Dye concentration | Cuvette path length | Absorbance |
|—|—|—|
| \(2.00 \times 10^{-5}\text{ M}\) | \(2.00\text{ cm}\) | \(0.800\) |

The Beer-Lambert relationship is \(A=\varepsilon bc\), where \(\varepsilon\) is the molar absorptivity. What is the molar absorptivity of the dye?

A student prepares a solution of a tracer dye used to monitor water flow. The student obtains the following data at the wavelength of maximum absorbance.

| Dye concentration | Cuvette path length | Absorbance |
|---|---|---|
| \(2.00 \times 10^{-5}\text{ M}\) | \(2.00\text{ cm}\) | \(0.800\) |

The Beer-Lambert relationship is \(A=\varepsilon bc\), where \(\varepsilon\) is the molar absorptivity. What is the molar absorptivity of the dye?

- **A.** \(2.00 \times 10^3\text{ M}^{-1}\text{cm}^{-1}\)
- **B.** \(2.00 \times 10^4\text{ M}^{-1}\text{cm}^{-1}\)
- **C.** \(4.00 \times 10^4\text{ M}^{-1}\text{cm}^{-1}\)
- **D.** \(2.00 \times 10^6\text{ M}^{-1}\text{cm}^{-1}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119353/*