PRINCIPLES OF INSTRUMENTAL ANALYSIS
7th Edition
ISBN: 9789353506193
Author: Skoog
Publisher: CENGAGE L
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Chapter 7, Problem 7.6QAP
Describe the differences and similarities between spontaneous and stimulated emission.
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Classify the phrases based on whether they describe fluorescence or phosphorescence.
Fluorescence
Phosphorescence
Answer Bank
T, to So
longer wavelength
higher energy
shorter wavelength
lower energy
S, to So
Discuss the fundamentals of fluorescence
Clearly describe the differences between fluorescence and phosphorescence. In your answer address the electronic states that are involved, the intensity, the wavelength and time scale of the specific emission process as well as what causes the difference in intensity, wavelength and time scale.
Chapter 7 Solutions
PRINCIPLES OF INSTRUMENTAL ANALYSIS
Ch. 7 - Prob. 7.1QAPCh. 7 - Prob. 7.2QAPCh. 7 - The Wien displacement law states that the...Ch. 7 - Prob. 7.4QAPCh. 7 - Prob. 7.5QAPCh. 7 - Describe the differences and similarities between...Ch. 7 - Prob. 7.7QAPCh. 7 - Prob. 7.8QAPCh. 7 - Prob. 7.9QAPCh. 7 - Prob. 7.10QAP
Ch. 7 - Why is glass better than fused silica as a prism...Ch. 7 - Prob. 7.12QAPCh. 7 - Prob. 7.13QAPCh. 7 - Prob. 7.14QAPCh. 7 - Prob. 7.15QAPCh. 7 - Prob. 7.16QAPCh. 7 - Prob. 7.17QAPCh. 7 - Prob. 7.18QAPCh. 7 - Prob. 7.19QAPCh. 7 - Prob. 7.20QAPCh. 7 - Prob. 7.21QAPCh. 7 - Prob. 7.22QAPCh. 7 - Prob. 7.23QAPCh. 7 - Prob. 7.24QAP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- What processes lead to fluorescence and phosphorescence? Which comes athigher energy? Which is faster?arrow_forwardExplain the difference between the excitation and emission spectra of a molecule such as anthracene.arrow_forward(1) Which more closely resembles an absorption spectrum, an emission or an excitation spectrum? (2) What is the difference between fluorescence and phosphorescence? (3) Define quantum yield?arrow_forward
- For photolytic degradation, the organic pollutant molecule must have a chromophoric group that is capable of absorbing solar radiation to be excited. Which one of the following chromophores can absorb photons at a wavelength of 340 nm? a) Azo. O b) Carbonyl. c) Nitro. d) Nitroso. O e) Phenol.arrow_forwardDescribe how the attenuation of X-rays correlate with i) their photon energy, ii) the chemical make-up of the transmission material, and iii) the distance they have travelled through the material.arrow_forwardUse a Jablonski diagram or potential energy curves to show the theoretical difference between fluorescence and phosphorescence. Describe how you determine the difference experimentally.arrow_forward
- Explain, based on the equations of Beer's Law and its equivalent for fluorescence, why increasing light intensity is beneficial only for fluorimetric analysis.arrow_forwardDo the results from Study 1 support the claim that photovoltaic cells capturing different frequencies function at varying efficiencies with changes in temperature? A Yes, because as temperature increases, efficiency decreases. No, because all photovoltaic cells function regardless of frequency. the same efficiency No, because there is no uniform change in efficiency as related to temperature. C Yes, because as temperature increases, so does efficiency.arrow_forwardIn what ways are microwave and ultraviolet radiation the same? In what ways are they different?arrow_forward
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