Im having a hard time with this chapter’s homework assigment Help please!!!
Classify each property as associated with a liquid that has strong or weak intermolecular forces.
high viscosity
low boiling point
low viscosity
high boiling point
high surface tension
low surface tension
low vapor pressure high vapor pressure
Concepts and reason
Intermolecular forces:
Intermolecular forces are the physical forces that includes be attractive forces or repulsive forces. They exist between molecules through non-covalent interaction bonds. There are three major types of intermolecular forces.
Fundamentals
The three major types of intermolecular forces are as follows:
- London dispersion force
- Dipole-dipole interaction
- Hydrogen bonding
Answer:
Viscosity – resistance to flow.
The viscosity of a liquid is directly proportional to the intermolecular forces.
so
Explanation:
Viscosity is the one of the bulk physical property of liquids which depends on the intermolecular forces. The liquid with stronger intermolecular forces result in a higher viscosity. Inversely, the liquid with weaker intermolecular forces will result in a lower viscosity.
Boiling point – The point at which liquid is equilibrium with vapor.
The boiling point of a liquid is directly proportional to the intermolecular forces.
Since the higher intermolecular force needs more energy to make them very weak interaction, the stronger intermolecular forces increase with the increasing boiling point.
Surface tension – The bulk physical property of the liquid. The intermolecular forces exert on the surface of molecules.
Surface tension of a liquid is directly proportional to the intermolecular forces.
Explanation:
Liquids having molecules with strong intermolecular forces result in high surface tension.
Liquids having molecules with weak intermolecular forces result in low surface tension.
Vapor pressure is exerted when the liquid is in equilibrium with vapor pressure.
Vapor pressure is inversely proportional to the intermolecular forces.
Explanation:
Liquids having molecules with strong intermolecular forces result in low vapor pressure.
Liquids having molecules with weak intermolecular forces result in high vapor pressure.