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The capacity of elimination of a dye in aqueous solution by adsorption on activated carbon was studied. Four solutions with different dye concentration were prepared and 40 mL from each of them were put in contact with activated carbon. Once equilibrium was attained, a aliquot was taken from each of the flasks and their absorbances were measured at 665 nm. The following table shows the measured absorbances, the initial dye concentrations (expressed in mmoles/L) and the exact quantity of activated carbon contained in each flask: carbon masss(g): 0,133; 0,102; 0,100; 0,105 10^3Co9(mM): 50; 100; 160; 190 A: 0,007; 0,026; 0,106; 0,177 The molar extinction coefficient of the dye at 665 nm was previously determined and a value of 16,33 mM cm_swas obtained. Obtain the adsorption constant from a linear fit of the C/q vs. C. Do all calculations in mM scale.
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