When the temperature is raised, the viscosity of the liquid...

Name: Problem 10, Chapter 2: Physical Chemistry for IIT JEE
Uploaded: 2022-02-07T18:23:42-08:00
Duration: 1 min 35 s
Channel: Vysakh M
Description: When the temperature is raised, the viscosity of the liquid decreases. This is because a. Attraction between the molecules increases b. Covalent and hydrogen bond forces decrease c. Volume of the solution decreases d. Increase in temperature increases the average kinetic energy of the molecules which overcomes the attractive force between them

When the temperature is raised, the viscosity of the liquid decreases. This is because a. Attraction between the molecules increases b. Covalent and hydrogen bond forces decrease c. Volume of the solution decreases d. Increase in temperature increases the average kinetic energy of the molecules which overcomes the attractive force between them

When the temperature is raised, the viscosity of the liquid decreases. This is because
a. Attraction between the molecules increases
b. Covalent and hydrogen bond forces decrease
c. Volume of the solution decreases
d. Increase in temperature increases the average kinetic energy of the molecules which overcomes the attractive force between them

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Key Concepts

Viscosity

Viscosity is the measure of a fluid's resistance to flow, resulting from the internal friction between its molecules. It is determined by the strength of the interactions among molecules; stronger attractive forces lead to higher viscosity, while weaker attractions allow the fluid to flow more easily.

Kinetic Energy

Kinetic energy is the energy due to the motion of molecules. As temperature increases, the average kinetic energy of the molecules increases, leading to faster movement and more effective overcoming of intermolecular attractive forces.

Intermolecular Forces

Intermolecular forces are the attractive forces that exist between molecules, such as dipole-dipole interactions, hydrogen bonding, and van der Waals forces. These forces contribute to the overall resistance to flow in liquids, and their relative impact diminishes when the kinetic energy of molecules increases with temperature.

Temperature Effects on Fluids

Temperature has a pronounced effect on the physical properties of fluids. In liquids, an increase in temperature imparts more kinetic energy to the molecules, which helps them overcome the inter-molecular attractions, resulting in a decrease in viscosity.

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