8. Based on the experimental data, graphically calculate G∞ and b in the Langmuir equation for the adsorption of acetic acid from an aqueous solution by coal:
Cav, mmol/ml 0.031 0.062 0.268 0.882
G, mmol/g 0.624 1.01 1.91 2.48
Determine the area per molecule of acetic acid S0, the specific surface of the adsorbent Ssp.

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