Electromagnetic radiation in the range from 200 to 800 nm causes electronic, vib

Question

Electromagnetic radiation in the range from 200 to 800 nm causes electronic, vibrational and rotational excitation. vibrational and rotational excitation. rotational excitation. Beer's law effectively states that the relationship between the absorbance of a solution and the concentration of the absorbing species in a solution is linear. This relationship is most likely to fail when the absorbing species is very dilute. the absorbing species participates in a concentration-dependent chemical equilibrium. a mixture of ions are present in the solution evaluated. Which of the following is not true regarding emission spectra? Emission spectra is generated by molecules that emit radiation at the same wavelength as the radiation they absorb. Luminescence measurements are inherently more sensitive than absorption measurements. Emission spectra are normally measured at a detector positioned at 90 degree to the in incident light.

Explanation / Answer

* (a) Radiation in the range of 200 to 800 nm can cause electronic, vibrational and rotational excitation.

** (a) It fails for very diliuted solutions

*** (c)

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