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Questions and Answers
What is the main purpose of a spectrophotometer in the laboratory?
What is the main purpose of a spectrophotometer in the laboratory?
- To determine the presence of a substance in a solution (correct)
- To create images of chemical compounds
- To separate different wavelengths of light
- To emit monochromatic light
What is the origin of the word 'spectrophotometer'?
What is the origin of the word 'spectrophotometer'?
- Latin word for light and Greek word for spectrum
- Latin word spectrum and Greek word phos (correct)
- Latin word for image and Greek word spectrum
- Latin word for light and Greek word for image
How does spectrophotometry measure the absorbance of monochromatic light?
How does spectrophotometry measure the absorbance of monochromatic light?
- By capturing light intensity leaving the sample and comparing it with that which passed through the sample
- By guiding light through a device that selects a specific wavelength and passes it through a sample (correct)
- By emitting light with special characteristics and capturing its interaction with the sample
- By transmittance calculation based on substance concentration ratios
What does absorption spectroscopy focus on?
What does absorption spectroscopy focus on?
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What is the purpose of comparing light intensity leaving the sample with that which passed through the sample in spectrophotometry?
What is the purpose of comparing light intensity leaving the sample with that which passed through the sample in spectrophotometry?
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