How intermolecular forces of attraction affect surface tension?

Surface tension: Liquids with stronger intermolecular forces tend to have higher surface tension than those with weak intermolecular forces. For example, if you pour a very small amount of water on a table, it will tend to collect together in one large drop.

How do intermolecular forces affect surface tension?

Stronger intermolecular forces will produce greater surface tension . The intermolecular forces present in a sample of water are hydrogen bonds . … If the hydrogen bonds are removed or disrupted, the surface tension will decrease.

What intermolecular force is responsible for surface tension?

The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.

How do intermolecular forces affect the surface tension and viscosity as intermolecular forces increase what happens to each property?

As the intermolecular attraction increases, • The vapor pressure ( the pressure of the vapor that is in equilibrium with its liquid) decreases • The boiling point ( the temperature at which the vapor pressure becomes equal to the pressure exerted on the surface of the liquid) increases • Surface tension ( the …

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Do strong intermolecular forces have high surface tension?

The surface tension of a liquid is a measure of the elastic force in the liquid’s surface. Liquids with strong intermolecular forces have higher surface tensions than liquids with weaker forces.

What causes higher surface tension?

As explained, the cohesive force between the molecules causes surface tension. The stronger the cohesive force, the stronger the surface tension. The water molecule has two hydrogen atoms bond to an oxygen atom through covalent bonding.

What are factors affecting surface tension?

Surface tension is caused by the effects of intermolecular forces at the interface. Surface tension depends on the nature of the liquid, the surrounding environment and temperature. Liquids where molecules have large attractive intermolecular force will have a large surface tension.

How does hydrogen bonding affect surface tension?

When many water molecules form hydrogen bonds with other water molecules, they form a lattice of water molecules, which is strong and flexible. This creates a high surface tension. … As a result, this molecule at the surface tends to be pulled into the bulk of the liquid and thus minimizes the surface area of a liquid.

How do intermolecular forces of attraction affect the properties of substance?

Stronger intermolecular forces will also result in a higher physical properties such as higher melting or boiling points, which require breaking molecules apart. … Since a higher vapor pressure means that it’s easier to vaporize a compound, this means that lower intermolecular forces leads to a higher vapor pressure.

How do intermolecular forces affect phase changes?

A phase change is occuring; the liquid water is changing to gaseous water, or steam. On a molecular level, the intermolecular forces between the water molecules are decreasing. … When considering phase changes, the closer molecules are to one another, the stronger the intermolecular forces.

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How does the viscosity and surface tension of liquids change as intermolecular forces become stronger?

Viscosity is the resistance of liquids to flow. Viscosity increases with 1) stronger intermolecular forces and 2) decreasing temperature. Surface tension results from the net inward force experienced by the molecules on the surface of a liquid.

How does intermolecular forces affect capillary action?

Capillary Action. Intermolecular forces also cause a phenomenon called capillary action, which is the tendency of a polar liquid to rise against gravity into a small-diameter tube (a capillary), as shown in Figure 11.4. 3. When a glass capillary is is placed in liquid water, water rises up into the capillary.

How do intramolecular and intermolecular forces of attraction differ?

Intramolecular forces are the forces that hold atoms together within a molecule. Intermolecular forces are forces that exist between molecules.