18. Determine the molecular weight of polymethylmethacr

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18. Determine the molecular weight of polymethylmethacrylate according to the following viscosimetric method:
Concentration of solution C, kg / m 3 1.0 1.2 1.4 1.6 1.8 2.0
The reduced viscosity of the solution of the polymer in benzene is η b / C
0.40 0.42 0.44 0.45 0.46 0.48
Constants: K = 4,7⋅10 -5, α = 0,77.

Additional information

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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