9. R. Aveyard & co-workers (J. Chem. Soc., Farad Trans., 86, 211 ( 1990 ) have measured the surface tension ( ) of the cationic surfactant, dodecyltrimethylammonium bromide (D0TAB) at various concentrations at 298K. DOTAB [mol.dm-3] .0025 .0032 .0041 .0052 .0067 .0086 .0111 o [ mN.m-1 ] 59.3 56.8 54.3 50.0 47.3 44.6 41.2 Given that both the cation and anion of DOTAB are adsorbed at the surface (absence of inert electrolyte), calculate the surface excess, D, in molecules / m2. Slrete whi ult fror f DoT AD 9utlining

9. R. Aveyard & co-workers (J. Chem. Soc., Farad Trans., 86, 211 ( 1990 ) have measured the surface tension ( ) of the cationic surfactant, dodecyltrimethylammonium bromide (D0TAB) at various concentrations at 298K. DOTAB [mol.dm-3] .0025 .0032 .0041 .0052 .0067 .0086 .0111 o [ mN.m-1 ] 59.3 56.8 54.3 50.0 47.3 44.6 41.2 Given that both the cation and anion of DOTAB are adsorbed at the surface (absence of inert electrolyte), calculate the surface excess, D, in molecules / m2. Slrete whi ult fror f DoT AD 9utlining

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter29: Supercritical Fluid Chromatography And Extraction

Section: Chapter Questions

Problem 29.11QAP

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