19. Determine the absorption coefficient ε λ

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19. Determine the absorption coefficient ε λ if, during the passage of light with a wavelength λ = 610 μm, the following data were obtained through a layer of sol mastic of thickness l at a concentration of C:
 
C,% 1.0 0.6 0.20 0.10 0.06 0.02 0.01
l, mm 2.5 2.5 2.5 5.0 20.0 20.0 30.0
The intensity of the transmitted light J,%
14.4 27.0 63.9 65.8 67.1 70.1 77.8
 
Construct a graph D = f (C).

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Questions and problems from the manual:
"Laboratory Workshop on Colloid Chemistry" Nekrasov AP, Veretenchenko BA, Kharkov NTU "KhPI", 2004
"Characteristic properties of disperse systems" Nekrasov AP, Kharkov, 1996
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