9 Nov 2021
Problem 14
Page 471
Section: Problems by Topic
Chapter 11: Liquids, Solids, and Intermolecular Forces
Textbook ExpertVerified Tutor
9 Nov 2021
Given information
Water (a) “wets” some surfaces and beads up on others. Mercury (b), in contrast, beads up on almost all surfaces.
Step-by-step explanation
Step 1.
In the case of Water(a),
Water "wets" surfaces that are capable of dipole-dipole interactions. The water will bead up maximizing the cohesive interactions which involve strong hydrogen bonds. So water will bead up on surfaces that can exist only exhibit dispersion forces.
Water "wets" surfaces that are capable of Dipole-Dipole forming strong adhesive forces with the surface.
Water has less surface tension as compared to mercury. It is because of the absence of intermetallic bonding in water. Surface tension makes the beads on surfaces. Hydrogen bonding is a weaker force than intermetallic forces.
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