State Graham’s law of diffusion.

State Graham’s law of diffusion.
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1 Answer

Answer :

“The rate of diffusion of a gas is inversely proportional to the square root of its density”.
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Related questions

What is the relationship between rate of diffusion and mass of gas?

Description : What is the relationship between rate of diffusion and mass of gas?

Last Answer : Rate of diffusion is inversely proportional to mass of gas.

What is rate of diffusion?

Description : What is rate of diffusion?

Last Answer : The rate of diffusion of a gas is the volume of gas diffusing per unit time.

When does diffusion of gases takes place?

Description : When does diffusion of gases takes place?

Last Answer : Diffusion of gases takes place when the gases do not react with one another.

What is meant by diffusion?

Description : What is meant by diffusion?

Last Answer : The random movement of gaseous molecules from the region of higher concentration to the region of lower concentration is known as diffusion.

State Boyle’s law

Description : State Boyle’s law

Last Answer : “At constant temperature, the volume of a given mass of dry gas is inversely proportional to its pressure”.

State Charles’s law.

Description : State Charles’s law.

Last Answer : “At constant pressure, the volume of a fixed mass of a gas is directly proportional to its absolute temperature (Kelvin)”.

Mention some applications of Boyle’s law in our daily life.

Description : Mention some applications of Boyle’s law in our daily life.

Last Answer : a) Deep sea fishes die when suddenly brought to surface due to low pressure. b) Scuba diver's life is under threat when they suddenly come to surface quickly. c) It is used in daily life situations ... to vehicle tyres. d) We feel pain in the ears when in an aeroplane during take off or landing.

What happens to the volume when the temperature is reduced to one-half according to Charles’s law?

Description : What happens to the volume when the temperature is reduced to one-half according to Charles’s law?

Last Answer : If the temperature is reduced to one-half, the volume would also be reduced to one-half.

What happens to the volume when the temperature is doubled according to Charles’s law?

Description : What happens to the volume when the temperature is doubled according to Charles’s law?

Last Answer : If the temperature is doubled, the volume would also be doubled.

How is the Graham’s law of diffusion useful in the enrichment of Uranium? Explain.

Description : How is the Graham’s law of diffusion useful in the enrichment of Uranium? Explain.

Last Answer : Graham’s law states that the rate of diffusion of a gas is inversely proportional to the square root of its molecular mass. This principle is used to separate by passing gaseous uranium through several stages of semi-permeable membrane.

Give reason: a) During the Bhopal gas tragedy, cockroaches, ants and mosquitoes survived.

Description : Give reason: a) During the Bhopal gas tragedy, cockroaches, ants and mosquitoes survived. b) When there is L.P.G leakage, one is advised to open all doors and windows.

Last Answer : a) During the Bhopal gas tragedy, cockroaches, ants and mosquitoes survived. Methyl Isocyanate is a gas denser than air. Hence it was unable diffuse in the crevices. So these animals survived. b) ... diffusion of the LPG with air molecules is faster. Hence any damage by explosion can be prevented.

Name the gas responsible for Bhopal gas tragedy.

Description : Name the gas responsible for Bhopal gas tragedy.

Last Answer : Methyl Isocyanate which is produced by the chemical combination of phosgene gas and methyl cyanide.

Give reason: a) Burning of kerosene does not produce much smell but when the burning ceases, it produces strong smell. b) Smell of hot food reaches faster then that of cold food.

Description : Give reason: a) Burning of kerosene does not produce much smell but when the burning ceases, it produces strong smell. b) Smell of hot food reaches faster then that of cold food.

Last Answer : a) Burning of kerosene does not produce much smell but when the burning ceases, it produces strong smell. When kerosene is burnt, only few molecules diffuse with air after combustion. But when the ... . Smell of hot food reaches faster because rate of diffusion is faster. Cold food diffuses slowly.

Give reasons: a) Deep sea fishes die when suddenly brought to surface.

Description : Give reasons: a) Deep sea fishes die when suddenly brought to surface.b) Scuba diver’s life is under threat when they suddenly come to the surface quickly. c) Balloons pop when squeezed. d) We feel uneasy pain in the ears during take off and landing of aeroplanes.

Last Answer : a) Deep sea fishes die when suddenly brought to surface. The pressure at the bottom of the sea is more, but the pressure at the surface is less. So due to low pressure the fish dies. ... aeroplanes. When the aeroplane takes off or lands, there is imbalance in pressure inside and outside of eardrum.

How are pressure, volume and mass of a gas related?

Description : How are pressure, volume and mass of a gas related?

Last Answer : The product of the volume and pressure of a given mass of dry gas is a constant.

Give reason: When you exert pressure on air pillow, its size gets reduced.

Description : Give reason: When you exert pressure on air pillow, its size gets reduced.

Last Answer : The volume of air filled in the air pillow decreases as we increase the pressure.

Why are the air bubbles smaller in size in lower layers but grows bigger as they rise up when water is boiled?

Description : Why are the air bubbles smaller in size in lower layers but grows bigger as they rise up when water is boiled?

Last Answer : Lower layers of water exert a lot of pressure on air bubbles. Hence they are smaller in size. But the pressure decreases as bubbles rise to the top. Hence they grow bigger.

Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.

Description : Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.

Last Answer : a) Soda bottles are often labelled store in cool and dry place . The carbon dioxide filled in soda bottles on exposure to heat, expands because the gas inside the bottle expands as temperature ... . When football is taken out, its temperature decreases so the volume to gas filled also decreases.

What is the relationship between volume and temperature of gases when pressure is kept constant?

Description : What is the relationship between volume and temperature of gases when pressure is kept constant?

Last Answer : Volume of a fixed mass of gas is directly proportional to its absolute temperature.

What is meant by absolute zero temperature?

Description : What is meant by absolute zero temperature?

Last Answer : The temperature -273^oC is called absolute zero or zero Kelvin.

What happens when a balloon with little air is tied to the mouth of a bottle with hot water? Why?

Description : What happens when a balloon with little air is tied to the mouth of a bottle with hot water? Why?

Last Answer : The balloon increases in size because temperature increases kinetic energy of gas molecules of balloon. This increases the random movement of gas molecules. Hence the volume increases gradually.

Mention the features of gases.

Description : Mention the features of gases.

Last Answer : a) Gases are highly compressible. b) Gases exert pressure equally in all directions. c) Gases mix evenly in all proportions without any mechanical aid. d) Gases are least dense than other two states of matter.

What are some applications of Grahams law?

Description : What are some applications of Grahams law?

Last Answer : Determining the speed or rate at which a gas will escape from a container relative to some other gas.

Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is nonlinear in the case of steady state unimolal unidirectional diffusion (C) Azeotropes obey Raoult's law at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

Description : Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial ... at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

Last Answer : (C) Azeotropes obey Raoult's law at all temperature

The equation, NA = (DAB . Pt /RTZ . PBM) (PA1 - PA2 ) is for (A) Fick's second law of diffusion (B) Steady state diffusion for stagnant case (C) Liquid M.T.C. by Higbie penetration theory (D) None of these

Description : The equation, NA = (DAB . Pt /RTZ . PBM) (PA1 - PA2 ) is for (A) Fick's second law of diffusion (B) Steady state diffusion for stagnant case (C) Liquid M.T.C. by Higbie penetration theory (D) None of these

Last Answer : (B) Steady state diffusion for stagnant case

Stefan's law describes the mass transfer by (A) Diffusion (B) Bulk flow (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Description : Stefan's law describes the mass transfer by (A) Diffusion (B) Bulk flow (C) Both 'a' & 'b' (D) Neither 'a' nor 'b'

Last Answer : (C) Both 'a' & 'b'

Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids (C) Particles movement from higher concentration to lower concentration takes place in diffusion process (D) According to Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids

Explain diffusion & its law. Also explain diffusion in gases & liquids.

Description : Explain diffusion & its law. Also explain diffusion in gases & liquids.

Last Answer : Ans : Diffusion : The spreading of a substance through medium like air or liquid is called diffusion. The rate of diffusion of a substance depends upon its molar mass or density. Example : When ... the available space due to their kinetic energy. This spreading of gas is called diffusion in gas.