Answer to Question #108144 in General Chemistry for Hudabia

Question

Question #1
An organic compound shows maximum absorption at 305nm in hexane, whereas its maximum absorption in ethanol is 307nm. What type of electronic transition is involved in this absorption

Question #2
Acetone shows maximum absorption at 279nm in hexane, whereas it maximum absorption in water is 265nm. Explain.

Answer 1

1)   n → π*

2) In polar solvents the energies of electronic transitions are increased