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
Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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![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 D0TAB are adsorbed at the surface
(absence of inert electrolyte), calculate the surface excess, D, in
molecules / m2.
Sketch the -A curve which might result from the adsorption of D0TAB outlining the
reason for your proposed choice.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa21bd011-a946-4f37-93c8-1e2eab1338de%2F13fd70a1-c1dc-49d8-a0ef-81480d526e1c%2F3r5zix7_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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 D0TAB are adsorbed at the surface
(absence of inert electrolyte), calculate the surface excess, D, in
molecules / m2.
Sketch the -A curve which might result from the adsorption of D0TAB outlining the
reason for your proposed choice.
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