Solvent Effects on UV-Vis Spectra
The UV-Vis absorption spectrum of an organic compound exhibits a bathochromic shift (red shift) when the solvent is changed from a nonpolar to a polar solvent. This observation suggests which of the following regarding the solute’s electronic transition energy and its interaction with the solvent?
A
Stabilization of the excited state by solvent-solute dipole interactions
B
Destabilization of the ground state by increased hydrogen bonding
C
Increased energy gap between HOMO and LUMO orbitals
D
Promotion of n→σ* transitions over π→π* transitions
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