MEDIUM

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$100 ml$ of $O_{2} (g)$ effuse from a porous container in $100 sec .$ $75 ml$ of unknown gas effuses under the same conditions of temperature and pressure in $150 sec .$ Calculate vapour density of unknown gas?

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Important Questions on States of Matter: Gases and Liquids

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

The ratio of rates of diffusion of oxygen and an unknown gas is

1 : 4

. The unknown gas is

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escape in the time required for one-half of the hydrogen to escape?

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

Two gases

A

and

B

are released from the two ends of a tunnel of length

100 m

. A travels

40 \min

, before meeting the gas

B

in the tunnel. If the molecular weight of

B

18

, what is the molecular weight of

A

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

1 L

each of gases

A

and

B

diffused through a membrane in

15

and

30

minutes, respectively, under identical conditions. What is the ratio of molecular weight of

A

and

B ?

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

Diffusion of

{CH}_{4} (g)

and

O_{2} (g)

occurs under similar conditions, then the ratio of their rates of diffusion is

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

How many times the volume of a diatomic gas should be increased reversibly and adiabatically in order to reduce its RMS velocity to half of its intial value.

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

The rate of diffusion of methane at a given temperature is twice that of gas

X

. The molecular weight of gas

X

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

Which of the following statement is not true?

HARD

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

10

litre cylinder contains equal volumes of

H_{2}

and

He

. If the mixture is allowed to diffuse from an opening, estimate the percent composition of the output gas. (Assume ideal behaviour of gas mixture)

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

At same temperature and pressure, the rate of diffusion of gas

' X'

3 \sqrt{3}

times that of a gaseous hydrocarbon of molar mass

54 g {mol}^{- 1}

. The molar mass of

X

g {mol}^{- 1}

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

According to Graham's Law, the rate of diffusion of

C O, O_{2}, N_{2} a n d C O_{2}

follows the order:

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

Sulphur dioxide and oxygen were allowed to diffuse through a porous partition.

20 {dm}^{3}

{SO}_{2}

diffuses through the porous partition in

60

seconds. The volume of

O_{2}

{dm}^{3}

which diffuses under the similar condition in

30

seconds will be (atomic mass of sulphur

= 32 u

);

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

A specific volume of

H_{2}

requires

24 s

to diffuse out of a container. The time required by an equal volume of

O_{2}

to diffuse out under identical conditions, is

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

18.0 s e c

are required for the diffusion of

x m o l

O_{2}

through some porous partition. Another gas

G

requires

45.0 s e c

for the diffusion of

x m o l

through the same partition under similar conditions. Then the molar mass of

G

is -

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

A lecture room contains 50 rows of seats numbered 1 through 50 from front to back. Ammonia is released from the front of the room at the same instant that hydrogen chloride gas is released from the back. Assuming Graham's law of diffusion, over which row of students will a white cloud of ammonium chloride from? MW: NH₃ = 17.0; HCl = 36.5, NH₄ Cl = 53.5 g/mol)

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

If rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B ?

HARD

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

50 mL of a gas A diffuses through a membrane in the same time as for the diffusion of 40 mL of a gas B under identical pressure and temperature conditions. If the molecular weight of

A = 64, that of B would be

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

Calculate the relative rate of effusion of

O_{2}

{CH}_{4}

through a container containing

O_{2}

and

{CH}_{4}

3 : 2

mass ratio.

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

What is the ratio of diffusion rate of oxygen and hydrogen?

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Graham's Diffusion Law

If the rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?

100 ml of O2g effuse from a porous container in 100 sec. 75 ml of unknown gas effuses under the same conditions of temperature and pressure in 150 sec. Calculate vapour density of unknown gas?

Important Questions on States of Matter: Gases and Liquids

Learn and Prepare for any exam you want !

$100 ml$ of $O_{2} (g)$ effuse from a porous container in $100 sec .$ $75 ml$ of unknown gas effuses under the same conditions of temperature and pressure in $150 sec .$ Calculate vapour density of unknown gas?