Attatched is UV-Vis Spectrum (Isopropanol, c= 1.65 * 10-4 M)Include the UV-Vis data in a table with wavelength, absorbance. and molar extinction coefficient WavelengthAbsorbanceMolar Extinction Coefficient300-700 nm UV-Vis Spectroscopy (isopropanol, c=1.60*104 M)JTJT*331 nm, A= 1.03JT*500 nm, A= 0.18n15Wavelength (nm)Absorbance Characterization V• UV-Vis SpectroscopyRange: =300-700 nmSolvent: isopropanolThe compound is weakly polar and dissolving it in isopropanolis more difficult. So be PATIENT!• Concentration: based largest peak in the range to be measured:It is important that the entire sample is dissolve beforeany dilution in order to know the true concentration ofthe sample being measured in the end!• Cuvette: polyethylene• It can only be used with low boiling alcohols.Toluene, hexane, the solvent mixture used for recrystallization, acetone,etc. cannot be used with this cuvette because they willetch the cuvette making it non-transparent.14

A question based on UV spectroscopy, which is to be accomplished.According to Beer-Lambert law, Absorbance = Molar extinction coefficient * concentration * length of cell (1 cm) Electronic transition Wavelength Absorbance Molar extinction coefficient Calculation π → π* 331 nm 1.03 6437.5 L.mol-1cm-1 ε = Ac * l = 1.031.60*10-4mol/L * 1.00 cm = 6437.5 L.mol-1cm-1 n → π* 500 nm 0.18 1125 L.mol-1cm-1 ε = 0.181.60*10-4mol/L * 1.00 cm = 1125 L.mol-1cm-1