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Chapter 12: Problem 26

Draw diagrams showing the capillary action of (a) water and (b) mercury in three tubes of different radii.

Short Answer

Expert verified
The drawings for capillary action in water and mercury shows that for water, the narrower the tube, the higher the water level due to its cohesive and adhesive forces. Conversely, for mercury, a substance with weaker adhesive forces with most containers, the narrower the tube, the lower the mercury level as its creates a convex meniscus as opposed to the concave meniscus observed in water.

Step by step solution

01

Drawing Water Capillary Action

Begin by drawing three vertical tubes of different radii - narrow, medium, and wide. At the base of each tube, draw a slightly curved upward line to represent the water level. Moving up each tube, draw a curved line to depict the concave meniscus formed by water as a result of capillary action, remembering that the narrower the tube, the higher the water level.
02

Drawing Mercury Capillary Action

Similarly, draw three vertical tubes of different radii - narrow, medium, and wide. Now, draw a line toward the base of each tube to represent the mercury level. However, unlike in water, the line depicting the mercury level in each tube should curve downward, creating a convex meniscus, due to the weaker adhesive forces of mercury with the surface of the tube. Again, remember that in the narrower tube, the mercury level will be lower.
03

Labeling the Diagrams

Make sure to properly label each diagram with the appropriate labels. For instance, the radii of the tubes, direction of adhesive forces, and the upward or downward meniscus.

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