Why does viscosity of gases vary directly with temperature?

With an increase in temperature, there is typically an increase in the molecular interchange as molecules move faster in higher temperatures. The gas viscosity will increase with temperature. With high temperatures, viscosity increases in gases and decreases in liquids, the drag force will do the same.

Why is viscosity and temperature inversely proportional?

Increasing temperature results in a decrease in viscosity because a larger temperature means particles have greater thermal energy and are more easily able to overcome the attractive forces binding them together.

Why does the viscosity of the gas increase with the increase in temperature while that of the liquid decreases with the increase in temperature?

When temperature increases the energy level of liquid molecules increases and the distance between the molecule increases. Simultaneously Increase in temperature of the liquid increase the molecular interchanging between fluid layers similar to those developed in a gas, interlayer interactions increases viscosity.

Is viscosity directly proportional to temperature?

The viscosity of liquids decreases rapidly with an increase in temperature, and the viscosity of gases increases with an increase in temperature. Thus, upon heating, liquids flow more easily, whereas gases flow more sluggishly.

Which of the properties of liquids are inversely proportional to temperature?

Effect of Temperature Surface tension is also inversely proportional to the temperature. The kinetic energy between the molecules tends to increase with the increasing temperature but decreases the force of attraction between the molecules. This decreases the surface tension of the liquid.

What happens to the viscosity of liquid and gas when the temperature is increased Mcq?

With the increase in temperature of a liquid, cohesion increases, leading to the rise in viscosity. Viscosity of a gas is due to the momentum transfer between it’s molecules. With the increase in the temperature of a liquid, molecular motion increases, leading to the fall in viscosity.

What are the causes of viscosity in gases and liquids?

Viscosity is caused by friction within a fluid. It is the result of intermolecular forces between particles within a fluid.

Why viscosity of liquid decreases with temperature while viscosity of gas increases?

Detailed Solution. Concept: The viscosity of liquids decreases with temperature, whereas the viscosity of gases increases with temperature. This is because in a liquid the molecules possess more energy at higher temperatures, and they can oppose the large cohesive intermolecular forces more strongly.

Why does viscosity arise in a gaseous system?

As temperature increases, the molecules move faster and more momentum is transferred between layers, thereby increasing the viscosity.

How does changing the temperature affect the viscosity and surface tension of a liquid?

As temperature increases, molecules of liquid become more active and they move more rapidly; therefore, the intermolecular forces are more instable. Surface tension decreases with increasing temperature. The greater a liquid’s viscosity, the more slowly it flows.

How does viscosity of liquid and gas varies with increase in temperature?

When temperature increases the viscosity of a gas?

Viscosity in gases arises principally from the molecular diffusion that transports momentum between layers of flow. For gases viscosity increases as temperature increases, while in liquids the additional force between molecules become important, hence viscosity tends to fall as temperature increases.

What is the relationship between viscosity and temperature?

According to the kinetic theory of gases, viscosity should be proportional to the square root of the absolute temperature, in practice, it increases more rapidly. Due to the increase of collisions resistance between the flows of different layers also increases i.e., viscosity also increases.

What is the co-efficient of viscosity of gases directly proportional to?

From experimental results it is seen that co-efficient of viscosity of gases is directly proportional to the square root of temperature i.e., η ∞ √T. Explanation from kinetic theory of gases: We know, gas molecules move randomly in all directions and they collide with each other.

What is the volume of a gas inversely proportional to pressure?

A law that states that at constant temperature, the volume of a fixed amount of a gas is inversely proportional to its pressure. A law that states that at constant temperature and pressure, the volume of a sample of gas is directly proportional to the number of moles of gas in the sample.

What is the relationship between temperature and volume of gas?

This law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature. As the volume goes up, the temperature also goes up, and vice-versa. Beside above, how are temperature and volume related?