Affiliation:
1. Chemistry Research Laboratory, Deshbandhu College, University of Delhi, New Delhi 110019, India
2. Graduate School of Engineering, Department of Polymer Chemistry, Kyoto University, Kyoto, Japan
Abstract
Surface tension (γ, mN/m) of potassium halide salts with water and interfacial tension (IFT) (±0.01 mN/m) of benzene interfaces with water are reported at 298.15 K temperature. The 0.1, 0.5 and 1.0 mol kg-1 potassium fluoride ( KF ), chloride ( KCl ), bromide ( KBr ) and potassium iodide ( KI ) solutions were studied. The KCl, KBr, KF and KI increased the surface tension by 5.2, 4.0, 3.1 and 3.0%, respectively, with salt–water interaction influence by anionic sizes. The surface tension of water from air–water to benzene–water interfaces is decreased by 51% due to the benzene–water mutual interaction with dipolar and π-conjugation. The KI, KF, KCl and KBr salts decrease the IFT by 63, 61, 61 and 56%, respectively, because of larger differences in sizes of the anions and the K + with individual salt. The KI developed stronger interactions with an induced potential of a large sized I - anion that held the water engaged and integrated the aqueous phase with higher interfacial tension. The dipolar and π-conjugation interaction model is proposed with biphasic systems.
Publisher
World Scientific Pub Co Pte Lt
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics
Cited by
3 articles.
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