Abstract
Summary Adsorption of o-, m- and p-toluidines from 0.1 M potassium iodide solution at mercury-solution interface is reported using capacitance method. Surface excess and free energy of adsorption using Bockris-Swinkels isotherm are evaluated. Adsorption energy is shown to depend on the dipole-dipole interaction energy. Esin-Markov plots are discussed on the basis of change of orientation at positive charges.
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