When a narrow diameter glass tube is inserted into a body of water, water rises

Question

When a narrow diameter glass tube is inserted into a body of water, water rises in the tube and its surface inside is concave upwards. Which statement, concerning the strength of the intermolecular forces between glass and water molecules compared to those between water molecules, is accurate?

(1). The forces of attraction between the glass and water are the same as those in water.

(2). The forces of attraction between the glass and water are weaker than those in water.

(3). Intermolecular forces are irrelevant to this situation.

(4). The forces of attraction between the glass and water are stronger than those in water.

Explanation / Answer

Statement 4) is accurate as the force of attraction between the water and walls of glass vessel i.e. adhesion of water to the walls of the glass Vessel causes an upward force on water at the edges and results in meniscus

( Concave shaped ) which turns upward and this adhesive force dominates the cohesive forces within the water .

So statement 4 ) is correct !!!

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