36. Solution to Chemistry Problem

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• Using the data tables provided for each option, plot three isotherms of benzene adsorption by graphitic soot.
• Using the linear form of the Langmuir equation, plot p/A versus p. Determine the limit of monomolecular adsorption (A) and the value of K for three temperatures using the slope of the angle to the abscissa axis and the length of the image along the ordinate axis.
• Calculate the specific area of ​​the adsorbent using the value of maximum monomolecular adsorption (A) at a temperature of T = 293 K (the area of ​​a benzene molecule on the surface of graphitized soot is 49.10 * 10-20 m2) /molecule.
• Plot a graph of lnk = f (1/T) and determine the value of ΔH.
• A = 0.01 mol / kg; A = 0.015 mol / kg; Plot isosteres for A = 0.02 mol/kg and calculate the differential isosteric heat of adsorption from the graphs.

b. Analyze the results.

Option 5

Pa 0 14 34 54 74

A293, mol/kg 0 0.0115 0.0222 0.0293 0.0343

A303, mol/kg 0 0.0070 0.0146 0.0205 0.0250

A313, mol/kg 0 0.0042 0.0094 0.0137 0.0174

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