76. According to the experimental data on the adsorption of phenol on the ion exchanger at 423 K, graphically determine the constants in the Langmuir equation, using which, build the Langmuir adsorption isotherm.
С 102, mol/l 1.5 4.5 7.5 9.0
A 103 kg/kg 0.40 1.05 1.18 1.20

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