SURFACE TENSION & INTERFACIAL PHENOMENON | PART-1 | INTERFACE | TYPES OF INTERFACE | IMPORTANCE

👨🏼‍🏫 INTERFACE
INTERFACE is the boundary between two or more phases exist together
The properties of the molecules forming the interface are different from those in the bulk that these molecules are forming an interfacial phase.
Several types of interface can exist depending on whether the two adjacent phases are in solid, liquid or gaseous state.
👨🏼‍🏫 INTERFACIAL TENSION
INTERFACIAL TENSION is the force per unit length existing at the interface between two immiscible liquid phases and has the units of dyne/cm.
interfacial tensions are less than surface tensions because an adhesive forces, between the two liquid phases forming the interface are greater than when a liquid and a gas phase exist together.
If two liquids are completely miscible, no interfacial tension exists between them.
👨🏼‍🏫 SURFACE TENSION [γ]
Surface tension is defined as the force in dynes, acting on the surface of the liquid at right angles of the length of surface of 1 centimetre.
The units of surface tension are dyne/cm and N/m.
👨🏼‍🏫 LECTURE PART-1 • SURFACE TENSION & INTE...
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