Part Two

Make a dilution of the dye solution of known concentration, so that the

concentration of the dye is half of the original concentration. Perform this

dilution, using volumetric pipets and volumetric flasks.

•Volume of Original Dye Solution Used (mL):

•Molarity of Original Dye Solution (M):

•Volume of Volumetric Flask for Diluted Dye Solution (mL):

•Molarity of Diluted Dye Solution (M):

Measure the absorbance spectrum of the diluted dye solution.

The data table can be downloaded from Google Drive: Sample Data Tables.

Record the wavelength of maximum absorbance. This wavelength is probably not

one of the wavelengths listed in the table above.

Wavelength of Maximum Absorbance (nm):

70