4. Show the applicability of the Bouguer-Lambert-Beer law to colloidal solutions of gold according to Svedberg’s data given below for particles with a diameter of 1.33:
concentration, g/l 1 0.5 0.33 0.25
absorption coefficient A 0.3238 0.1598 0.1081 0.08037
Use the equation given in option 18. Solve the problem graphically.

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