The reason for some absorbing compounds being fluoresce but others are not is to be stated. Concept introduction: Fluorescence is a term used to define the members of the luminescence family. In the luminescence family, the molecules of a substance can produce their own light with the help for electronically excited states which can be formed by chemical,physical or mechanical mechanism.

Question

4. To analyze the Cu(NO3)2 unknown solution in Part 3, your group constructed a plot of absorbance vs. concentration, commonly called a calibration curve or standard curve. The absorbance at the top of the peak (i.e., at the wavelength of maximum absorbance) was chosen for these measurements. What is the potential advantage of using the wavelength of maximum absorbance, rather than some other wavelength? Can you think of a situation in which you might want to choose a different wavelength? (Hint: Scientists often do not have the luxurý of analyzing pure substances dissolved in distilled water!)

Answer 1

Question

Chapter 15, Problem 15.5QAP

Interpretation Introduction

Interpretation:

The reason for some absorbing compounds being fluoresce but others are not is to be stated.

Concept introduction:

Fluorescence is a term used to define the members of the luminescence family. In the luminescence family, the molecules of a substance can produce their own light with the help for electronically excited states which can be formed by chemical,physical or mechanical mechanism.

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