Do stronger bonds mean higher viscosity?

Higher the intermolecular forces, higher will be the viscosity. When there is a strong intermolecular force, the molecules of the liquids are strongly bonded to each other. This induces a resistance to move. The liquids whose molecules are polar or capable of forming hydrogen bonds are more viscous.


What makes a molecule have a higher viscosity?

Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances.

Does viscosity increase with stronger intermolecular forces?

Viscosity increases as intermolecular interactions or molecular size increases.


Can intermolecular forces affect viscosity?

Intermolecular forces play a role in viscosity, because stronger attractions between molecules cause them to resist flow more strongly. Molecule size is also an important factor in viscosity because the attraction of intermolecular forces is stronger, so that they cause more friction.

Does more hydrogen bonds mean higher viscosity?

Viscosity of liquids are affected by the presence of hydrogen bonding: As the number of O-H bonds increases the viscosity increases.


Understanding Viscosity



How do bonds affect viscosity?

Higher the intermolecular forces, higher will be the viscosity. When there is a strong intermolecular force, the molecules of the liquids are strongly bonded to each other. This induces a resistance to move. The liquids whose molecules are polar or capable of forming hydrogen bonds are more viscous.

Does bonding affect viscosity?

Within molecular interactions, hydrogen bonding plays a significant role in determining the viscosity. The viscosity of a liquid is determined at the molecular level and it is the net results of all the interactions and the molecular weight.

What are the 4 factors that affect viscosity?

The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient , etc.


What are 3 factors that affect viscosity?

Those are:
  • Fluid Temperature: Usually the viscosity of liquids decreases with an increase in temperature. ...
  • Flow Conditions: For laminar flow the viscosity of liquid remains constant while for turbulent flow viscosity changes.
  • Pressure: With an increase in pressure, the viscosity of gases usually increase.


Which factors affect on viscosity *?

Increase in temperature decreases viscosity. Increases in pressure increase viscosity in liquids. In water, it decreases whereas, in gases, it remains the same.
  • Increase in temperature decreases viscosity.
  • Increases in pressure increase viscosity in liquids. In water, it decreases whereas, in gases, it remains the same.


Which force has the highest viscosity?

Thus, intermolecular H-bonding exists only in ethanol unlike other liquids, hence it has strongest intermolecular attractions and accordingly has the highest viscosity.


What is the relationship between viscosity and intermolecular forces quizlet?

The stron- ger the intermolecular forces, the greater is the viscosity, or resistance to flow, of a liquid. The surface tension of a liquid also increases as intermolecular forces increase in strength.

How does viscosity depend on intermolecular forces quizlet?

Viscosity is greater in substances with stronger intermolecular forces because molecules are more strongly attracted to each other., preventing them from flowing around each other as freely.

How to increase viscosity?

Solution viscosity for electrospinning can generally be increased by using a more concentrated polymer solution or using a higher molecular weight polymer.


Do double bonds affect viscosity?

Double-bond position affects viscosity less; terminal double bonds have a comparatively small viscosity-reducing effect (Knothe, 2005b).

What contributes the most to viscosity?

State of the Systemic Circulation

The two most important determinants of blood viscosity are the hematocrit and fibrinogen levels. In patients with hematocrits in the range of 47–53%, lowering of the hematocrit by phlebotomy to below 40% can increase cerebral blood flow by as much as 50%.

What causes viscosity difference?

It is caused by the attractive forces between molecules in close contact, and the friction between molecular chains. Higher energy is required to deform a highly viscous liquid, while lower energy is needed when deforming a less viscous fluid. Generally, SOs with longer chain lengths have higher viscosity.


What are the forces responsible for viscosity?

Cohesive forces between like molecules are responsible for a liquid's viscosity (resistance to flow) and surface tension (elasticity of a liquid surface).

Which of the factors contributes to a low viscosity of a liquid?

Low viscosity in liquids is the result of temperature, with higher temperatures decreasing viscosity. Many liquids exhibit low viscosity at room temperature, such as water or alcohol, and other liquids demonstrate low viscosity under increasing heat.

What contributes to viscosity of a liquid?

For liquids, typically the larger the intermolecular forces (IMF) the higher the viscosity. The other factors that affect viscosity are temperature and the shape of the molecule. Higher temperatures will correspond to higher average kinetic energies and faster moving molecules. This will lead to a lower viscosity.


How is H bonding linked to viscosity?

In liquids, the ability of neighboring molecules to rearrange and jostle past each other is directly related to viscosity, the property which describes the propensity to flow. The presence of hydrogen bonds (H-bonds) complicates the molecular scale picture of viscosity.

Does viscosity depend on hydrogen bonding?

The surface tension and viscosity of water are also related to the strength of the hydrogen bonds between water molecules.

What is the relationship between viscosity and cohesion?

Cohesion – the ability of liquid particles to stick together. Adhesion- The ability of a liquid to stick to the surface of a solid. Viscosity – The ability of liquid particle to stick together when poured. Surface Tension – The ability of liquid particle to stick together at the surface.


What happens when bond strength increases?

As bond strength increases, the atoms in the bond are pulled more tightly together. Therefore, generally, as the bond energy increases, the bond length decreases. The strength of a bond between two atoms increases as the number of electron pairs in the bond increases.

What does high viscosity mean?

In layman's terms, viscosity defines a fluid's resistance to flow. The higher the viscosity of a liquid, the thicker it is and the greater the resistance to flow. Temperature will affect the viscosity of most materials.
Previous question
What does mean 182?