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Problem

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Textbook Expert
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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