There are certain substances which behave as normal strong electrolytes at low
concentration but at higher concentration they behave as colloidal solutions due to
the formation of aggregated particles. Such colloids are called associated colloids
and the aggregated particles are called micelles. Soaps and detergents are the
examples of associated colloids. The formation of micelles takes place above certain
concentration called critical micellization concentration(CMC) and a characteristic
temperature called Kraft temperature.
(xix) Which type of colloids form micelles?
(xx) Give an example of associated colloid used in our daily life.
(xxi) What does CMC stand for?
(xxii) What is the role of CMC in micelle formation?
(xxiii) What is Kraft temperature?
Answers
Answer:
xix. Micelles are associated colloids. Associated colloids are those colloids which behave as normal strong electrolytes at low concentrations but exhibit colloidal properties at higher concentrations due to the formation of aggregated particles.
xx.examples include whipped cream, mayonnaise, milk, butter, gelatin, jelly, muddy water, plaster, colored glass, and paper. Every colloid consists of two parts: colloidal particles and the dispersing medium.
xxi critical micelle concentration
In colloidal and surface chemistry, the critical micelle concentration (CMC) is defined as the concentration of surfactants above which micelles form and all additional surfactants added to the system will form micelles. The CMC is an important characteristic of a surfactant.
xxii.The CMC is the concentration of surfactants in the bulk at which micelles start forming. ... In most situations, such as surface tension measurements or conductivity measurements, the amount of surfactant at the interface is negligible compared to that in the bulk and CMC can be approximated by the total concentration.
xxiii Krafft temperature is defined as the temperature at which the solubility of a surfactant is equal to the surfactant's critical micelle concentration (CMC) at the same temperature. ... The Krafft temperature is a point of phase change below which the surfactant remains in crystalline form, even in aqueous solution.
Pls give thanks and mark as brainlist ans
Explanation:
mark as brilliant ☺️☺️☺️☺️
