Discussion
Raman spectroscopy is particularly convenient for aqueous samples because water is
Answer: D
Correct answer: a weak Raman scatterer
Water absorbs infrared radiation very strongly, which makes aqueous infrared spectroscopy difficult, but it is a poor Raman scatterer because the O-H stretch involves little change in polarisability. Aqueous solutions can therefore be examined directly, in ordinary glass, without drying or solvent substitution - which is why Raman is so useful in biological and electrochemical work.
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