6. Plot an adsorption isotherm and determine the total soot porosity (according to the Dubinin-Radushkevich equation), using experimental data on benzene adsorption on soot (options I–III):
0.1 0.2 0.3 0.4
A, mol/kg
I 1.75 2.15 2.42 2.66
The molar volume of benzene is 88.8 cm3/mol.

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