Interpretation:
To explain the reason for the broader spectrum of CaOH compared to the sodium emission line.
Concept introduction:
Spectral lines help in identifying the atoms and molecules. These are a result of absorption or emission of light in a comparatively narrow frequency range nearby.
Answer to Problem 8.1QAP
CaOH spectrum is broader owing to the transitions among the vibrational and rotational states whereas in the case of sodium, the transitions take place among electronic energy states.
Explanation of Solution
CaOH or calcium hydroxide is an ionic molecule where vibrational and rotational levels are possible. Owing to the transitions among the vibrational, rotational states, there exists broad line spectra in case of the CaOH molecule.
In the case of sodium, it is not possible to have the transitions among the vibrational, rotational states. They take place among electronic energy states thus, resulting in a line spectrum.
CaOH spectrum is broader owing to the transitions among the vibrational and rotational states which is not possible in sodium.
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Chapter 8 Solutions
Principles of Instrumental Analysis, 6th Edition
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