68.(IV) Plot an adsorption isotherm and determine the pore volume of the zeolite (according to the Dubinin-Radushkevich equation) using experimental data on the adsorption of heptane on the zeolite. Heptane density ρ=0.684 g/cm3
IV (p/ps)*103 0.05 0.14 0.25 0.66 3.10 11.0 27.7
А, mol/kg 0.94 1.23 1.45 1.88 2.70 3.53 3.99

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