A mixture of two immiscible liquids A and B forms an emulsion. The interfacial tension between A and B is . A surfactant is added to stabilize the emulsion. Which of the following statements is TRUE regarding the effect of the surfactant on and the stability of the emulsion?
The surfactant decreases , increasing the emulsion's stability.
The surfactant increases , increasing the emulsion's stability.
The surfactant decreases , decreasing the emulsion's stability.
The surfactant increases , decreasing the emulsion's stability.
Related Questions
Cod liver oil is
An emulsion
Solution
Colloidal solution
Suspension
Which is an emulsion?
Boot polish
Lipstic
Shampoo
All of these
Emulsifying agents generally used are :
Ions with negative charge
Surface active agents
Ions with a positive charge
Lyophobic substances
Which of the following statements is incorrect?
Emulsions are prepared by shaking two liquid components, say oil and water and adding some emulsifying agent
Water-in-oil emulsions are formed when the emulsifying agent at the interface is chiefly in the water phase
Water-in-oil emulsions are formed when the emulsifying agent at the interface is chiefly in the oil phase
Gems and gels mixed together to give emulsion
Which of the following is not an emulsion?
Butter
Ice cream
Milk
Clouds
Cow milk, an example of natural emulsion is stabilised by
Fat
Water
Casein
From the following which is not an emulsifier?
Agar
Milk
Gum
Soap
Anionic detergents are characterized by:
A negatively charged hydrophilic head
A positively charged hydrophobic head
A nonpolar hydrophilic tail
A positively charged hydrophilic head
In emulsion the dispersed phase and dispersion medium are :
Both solids
Both liquids
A solid and liquid
A liquid and solid
The Kraft temperature is the temperature:
above which micelles form
below which micelles form
at which the surfactant precipitates
at which the emulsion inverts
