4. Using the table data on the adsorption of butyric acid from an aqueous solution at T=293K, determine the limit value of adsorption A∞ according to Langmuir. Calculate the specific surface of the adsorbent, taking the area of the molecule in the surface layer S0=20.5 nm2.
С*10-3 mol/m3 0.06 0.16 0.46 0.56 0.76 1 1.6 3.7
A*106 mol/g 1.31 2.51 3.9 4.12 4.42 4.65 4.45 3.4

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