Explain why the surface of water in a glass tube is concave while that of mercury is convex?
Monday, March 13, 2023
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Question: Explain why the surface of water in a glass tube is concave while that of mercury is convex?
The surface of water in a glass tube is concave because the adhesive forces between water molecules and the glass are stronger than the cohesive forces between the water molecules themselves. This causes the water to adhere to the glass and curve inward to minimize its surface area. On the other hand, the surface of mercury in a glass tube is convex because the cohesive forces between mercury atoms are stronger than the adhesive forces between mercury and glass. This causes the mercury to pull away from the glass and form a convex surface to minimize its surface area.
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