3. Using the Bouguer-Lambert-Beer equation, determine the parameter denoted by x in the units specified.
Option Determined ion or substance Reaction of formation of a colored compound Length
wavelength,
nm. ε Layer thickness, cm Current, in scale divisions Concentration Optical density
initial after absorption
3 Pb2 With dithisoin PbR2 in CHCl3 520 70000 5.00 80 x 1.05 μg/ml

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