104. Solving a chemistry problem
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104. Solving a chemistry problem
26. Plot an adsorption-desorption isotherm and an integral curve of the adsorbent pore volume distribution by size using the data of capillary condensation of methanol on silica gel at 293 K.
p • 10-2, Pa 12.8 25.6 38.4 51.2 64.0 76.8 90.0 102.0
A, mol/kg ads. 7.5 8.0 8.3 8.6 9.4 10.2 11.4 13.0
A, mol/kg des. 7.5 8.3 9.0 9.6 10.0 11.0 11.7 13.0
The molar volume of methanol at 293 K is 40.6 cm3/mol; saturated vapor pressure 12800 Pa; surface tension 22.6 mJ/m2.
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