55. Solving a chemistry problem

55. Solving a chemistry problem

4.9 Using a graphical method, determine the surface activity of butyric acid at the boundary of its aqueous solution with air at 293 K according to the following experimental data:
acid concentration, kmol/m3 0.021 0.050 0.104 0.246
b•103, N/m 68.12 63.53 58.60 50.30

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