Surfactant

Question 1

Which piece of apparatus determines surfactants?

Answer 1

Surfactants determined by Langmuir Blodgett films

=> collapse related to shape/size

Question 2

Define surfactants

Answer 2

Surface active agent
=> Species active at interface
=> composition different to bulk
=> surface energy accumulates surfactants at interface active agent

Question 3

Describe the effects on surface tension when solute accumulates at the interface

Answer 3

Surface tension decreases when solute accumulates at surface

Question 4

Describe the effect on area when a particle is charged

Answer 4

Area of charged particle x 2 of an uncharged one