Answer to Question #177807 in General Chemistry for Aena

Question

Acetone shows maximum absorption at 279 NM in hexane where's its lambda λmax in water is 265 nm. Explain

Answer 1

Solvent effect on absorption spectroscopy and Difference between UV and Visible Spectroscopy. Solvents play an important role in UV spectra. Compound peak could be obscured by the solvent peak. So a most suitable solvent is one that does not itself get absorbed in the region under investigation.