The following data were obtained for the extent of adsorption, s, of acetone on charcoal from an aqueous solution of molar concentration, c, at 18°C.
|
c/(mmol dm-3)
|
15.0
|
23.0
|
42.0
|
84.0
|
165
|
390
|
800
|
|
s/(mmol acetone/g charcoal)
|
0.60
|
0.75
|
1.05
|
1.50
|
2.15
|
3.50
|
5.10
|
Which isotherm fits this data best, Langmuir, Freundlich, or Temkin?