Spectrophotometric Lab Data
Names: Angela, Karl, Tayona,
Kamryn________________________________________________________
Color: Blue_r_________________________
Read your colored solution in Absorbance units at each wavelength. Remember to zero the
spectrophotometer with a water- filled cuvette each time the wavelength is changed.
1. After obtaining values at each wavelength, plot Wavelength vs. Absorbance on a Google
sheet line graph.
Wavelength(n 400
m)
425
450
475
500
525
550
575
600
Absorbance
.63
.21
.30
.41
.77
.23
.27
1.13
1.34
Wavelength(n 625
m)
650
675
700
Absorbance
1.23
1.18
.15
1.66
2. Look at the wheel of complementary colors. The color of the solution you test should
match the wavelength range of the complementary color across from it. Read the
information contained in the link and explain why this is true, based upon the information
explaining the relationship of wavelength absorbance to specific colors.