2. Based on experimental data on the sorption of water vapor on coal (at 293 K), construct a capillary condensation curve (hysteresis loop). Using the desorption branch, construct the integral and differential pore size distribution curves.
Equilibrium pressure р*10-2, Pa 5.3 10.0 11.3 12.5 14.7 17.3 20.0 23.3
Value A, mol/kg adsorption 0.5 2.3 4.0 5.0 10.0 16.0 20.0 28.5
desorption 0.5 2.5 5.0 7.5 15.0 23.0 27.6 28.5
Saturated vapor pressure of water ps=2338 Pa. The molar volume of water is 18 cm3/mol, the surface tension of water is b=71.96*10-3 J/m2.

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