2. According to the following data:
P(H2), mm Hg 4 6 16 24 50 78 120.
Х/m*103 kg/kg 25 30 48 53 66 72 78
build an adsorption isotherm, draw up an adsorption equation and find the constants of the Freundlich equation, determine the surface of a sorbtiva molecule, calculate the adsorption activity of an adsorbent at PH2= 20 mm Hg.

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