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In UV-Vis spectroscopy, what does a higher molar absorptivity indicate?

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Question: In UV-Vis spectroscopy, what does a higher molar absorptivity indicate?

Options:

  1. Lower concentration
  2. Higher concentration
  3. More efficient light absorption
  4. Less efficient light absorption

Correct Answer: More efficient light absorption

Solution: 

A higher molar absorptivity indicates that a substance is more efficient at absorbing light at a given wavelength.

In UV-Vis spectroscopy, what does a higher molar absorptivity indicate?

Practice Questions

Q1
In UV-Vis spectroscopy, what does a higher molar absorptivity indicate?
  1. Lower concentration
  2. Higher concentration
  3. More efficient light absorption
  4. Less efficient light absorption

Questions & Step-by-Step Solutions

In UV-Vis spectroscopy, what does a higher molar absorptivity indicate?
  • Step 1: Understand what molar absorptivity means. It is a measure of how well a substance can absorb light at a specific wavelength.
  • Step 2: Recognize that a higher value of molar absorptivity means the substance can absorb more light.
  • Step 3: Conclude that if a substance has a higher molar absorptivity, it is more efficient at absorbing light.
  • Molar Absorptivity – Molar absorptivity (also known as molar extinction coefficient) is a measure of how strongly a chemical species absorbs light at a particular wavelength.
  • Light Absorption Efficiency – A higher molar absorptivity means that the substance can absorb more light, indicating greater efficiency in light absorption.
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