InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Explain the term vapour pressure, surface tensionand viscosity |
|
Answer» Liquids show the unique property of turning into vapors, as soon as the temperature rises! Generally, vapors from the aqueous substance occupy the walls of the unfilled part of the container and exert a pressure on the walls of that container, this pressure is called the vapor pressure. The molecules in a liquid experience an equal intermolecular force from all the sides. The intermolecular force between the molecules on the surface is exerted perpendicularly downwards and this is called the surface tension of the liquid. The surface tension of a liquid depends on the intermolecular forces directly, greater the force higher is the surface tension. The viscosity of a liquid substance is a measure of resistance to flow. The intermolecular forces and internal friction between the moving molecules in the liquids make them viscous to flow. |
|