Adsorption of urea at the mercury—water interface |
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| Authors: | Roger Parsons Robert Peat Robert M. Reeves |
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| Affiliation: | Department of Physical Chemistry, The University, Bristol BS8 1TS England |
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| Abstract: | The adsorption of urea on mercury from aqueous 1 M KNO3 has been determined from capacity and electrocapillary measurements. A Langmuir isotherm is obeyed with a saturation molecular area of 24 × 10?10 m2 per molecule. The standard free energy of adsorption is a quadratic function of charge with maximum adsorption occurring at a charge of +8 μC cm?2. These data are interpreted in terms of the partially oriented urea dipole, the contribution of water dipoles and nitrate ions also being considered. |
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| Keywords: | To whom correspondence should be addressed. |
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