Determination Of Surface Tension Coefficient Of Liquids

Question 1

Intermolecular forces

Answer 1

Forces of attraction between molecules

Question 2

Intermolecular forces

Answer 2

Forces of attraction between the atoms (within) a molecule

Question 3

Cohesive forces

Answer 3

Attractive forces between like molecules.

Question 4

Adhesive forces

Answer 4

Attractive forces between unlike molecules

Question 5

Surface tension

Answer 5

The tendency of a liquid free surface to attain minimum surface area and behave like a stretched elastic membrane

Question 6

Surface tension coefficient

Answer 6

Force (F) per unit length (L) on either side of an imaginary line drawn on the free liquid surface

Question 7

Molecular range

Answer 7

The maximum distance up to which a molecule attracts another molecule

Question 8

Sphere of influence

Answer 8

A sphere drawn with a molecule at the centre and it’s corresponding molecular range as the radius

Question 9

Meniscus

Answer 9

Curved surface of the liquid

Question 10

Laplace/excess pressure

Answer 10

Difference in pressure between the two sides of the liquid surface

Question 11

Capillarity

Answer 11

Refers to the depression/rise of a liquid in small - diameter tubes

Question 12

Surfactants

Answer 12

Materials that reduce the surface tension between 2 liquids or between a liquid and a solid.