10. Using the graphical method, find the surface activi

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10. Using the graphical method, find the surface activity of oleic acid at the boundary of the aqueous solution with air (at T = 293 K) according to the following experimental data:
C, kmol / m 3 0,0 0,021 0,05 0,104 0,246
σ · 10 3, N / m 72.53 68.12 63.53 58.60 50.30

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
Tasks are executed in Microsoft Word, graphics - in Microsoft Exel or OriginPro; formulas are typed in the MathType editor (if the formulas contain unreadable characters, then you need to install this editor); files are archived by WinRAR.


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