12 Questions
In the case of amphiphiles in water, how do the molecules orient themselves in a micelle?
Hydrocarbon chains face inward
What is the term used for the ions attracted to the surface of a micelle that reduce the overall negative charge?
Counterions
At higher concentrations, what type of micelles have an increasing tendency to form?
Laminar micelles
Which type of amphiphile is represented by Cetyl trimethylammonium bromide?
Cationic
In non-polar liquids, how do amphiphile molecules orient themselves in a micelle?
Polar heads face inward
What do we call mixtures of two or more amphiphiles in pharmaceutical formulations?
Conjugates
What are association colloids also known as?
Amphiphilic colloids
What happens when the concentration of amphiphiles is increased?
They aggregate to form micelles
What is the critical micelle concentration (CMC)?
The concentration at which monomers aggregate to form micelles
What is the aggregation number of a micelle?
The number of monomers that aggregate to form a micelle
At what point does micelle formation occur in the bulk phase?
Above the CMC
How does the formation of association colloids compare to lyophilic sols?
It is a spontaneous process, like lyophilic sols
Test your knowledge on association colloids, micelles, and the Critical Micelle Concentration (CMC). Learn about molecules with two distinct regions of opposing solution affinities and their behavior in liquid mediums at different concentrations.
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