Question

Difine angle of connect why angle of connect obtuse in case of Mercury​

Answer 1

Answer:

When the adhesive forces are greater than the cohesive forces, a lower meniscus is formed and hence the angle of contact is an acute angle. Now, we can understand that when the liquid is mercury, the cohesive forces are greater than the adhesive forces. Therefore, the angle of contact is an obtuse angle

Answer 2

Answer:

The cohesive force between the molecules of mercury is more than the adhesive force between the molecules of mercury and those of glass.This results in the formation of a convex meniscus for the surface of mercury. Actually,cohesive force and Adhesive forces are the phenomenon due to the surface tension of a liquid. The angle made by the mercury from the glass surface is always obtuse.

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