112. Calculate the excess adsorption of sebacic acid and plot the adsorption isotherm of surface tension 6 o on the concentration C mol/m2 of its aqueous solutions at a temperature of 293 K.
c, mol/m3 σ*103, N/m
0 72.90
0.001 71.70
0.002 68.37
0.003 67.42
0.005 64.93
0.006 63.84
0.007 63.56
0.008 62.33
0.009 62.05
0.010 61.91
0.015 59.44
0.020 58.14
0.025 57.06
0.030 56.19
0.035 55.31
0.040 54.11
0.045 52.90

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