Surface Chemistry

Adsorption of phenol from its aqueous solution on to fly ash obeys Freundlich isotherm. At a given temperature, from 10mgg−1 and 16mgg−1 aqueous phenol solutions, the concentrations of adsorbed phenol are measured to be 4mgg−1 and 10mgg−1, respectively. At this temperature, the concentration (in mgg−1 ) of adsorbed phenol from 20mgg−1 aqueous solution of phenol will be ____
Use : log102 = 0.3