Answer to Question #136532 in Organic Chemistry for usama

Question

Acetone shows maximum absorbance at 279nm in hexane where in water its λmax is 265nm Justify.

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.