5. The surface tension of a solution of some surfactant is given in the table:
conc., mol/l 0 0.3 0.06 0.12 0.25 0.5
tension, mJ/m2 72 69 61 52 44 38
Plot the plot of surface tension versus concentration from these data, graphically convert it into a plot of adsorption versus concentration, estimate the values ​​of "B" and "Gmax" for the last plot, assuming that this is the Langmuir isotherm.

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