Question

Consider the following surfactants:

(a) Which are nonionic surfactants?

i) A
ii) B
iii)C
iv) D
v) E

Answer 1

not right

Answer 2

OOOOO SORRY B AND E

Answer 3

Thank you for a)

Any ideas for

(b) Which are likely to have much lower critical micelle concentrations?
A
B
C
D
E

(c) Which surfactant is more likely to form non-spherical micelles?
A
B
C
D
E

The surface tension versus concentration for a surfactant in aqueous solution is shown below. The surface tension versus concentration naturally divides into two different regions, A and B.

(d) What phenomena divides region A from B?
i)Critical micelle concentration
ii)Intermolecular Bond Strength

(e) You wish to use a solution of this surfactant in water to dissolve oil. Which region will be required to do this?
i)Region A
ii)Region B

(f) How much oil will dissolve in the surfactant-water solution if the concentration of surfactant falls in region A?

Answer 4

a B E
b B E
c E
d critical micelle concentration
e I have no idea

Answer 5

(e). Region B
(f). 0

Answer 6

Thank you.
(a) B E
(b) B E
(c) E
(d) critical micelle concentration
(e). Region B
(f). 0

Answer 7

(f) 0