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Assignment 2 The volume of CH4 (corrected to STP) adsorbed per gram of charcoal at 240...

Assignment 2

The volume of CH4 (corrected to STP) adsorbed per gram of charcoal at 240 K versus pressures of CH4 is:

P/ (Torr)                    38          55        78          104       133       173        218

V/ (cm3.g-1)           14.14     17.52    21.38      24.72     28.00    31.35     34.50

If I plot p/v vs p as shown below the data is linear which obey Langmuir adsorption isotherm.

7.0 6.5 6.0 P/V ( Torr.cmº.g) 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0 20 40 60 80 100 120 140 160 180 200 220 240 260 P (torr)

  1. Determine the volume corresponding to complete surface coverage (Vm).
  2. Determine the specific area of the solid
7.0 6.5 6.0 P/V ( Torr.cmº.g) 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 0 20 40 60 80 100 120 140 160 180 200 220 240 260 P (torr)
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