MEDIUM

Earn 100

$500 mL$ of a mono atomic gas X diffuses through a hole at a pressure of $4 atm$ and $127 ° C$ . $1500 mL$ of another elemental diatomic gas Y diffuses through the same hole at pressure of $2 atm$ and $27 ° C$ . If the time taken for both the diffusion process is same, then compare the atomic weights of the two gases.

Important Questions on Gaseous State

MEDIUM

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

1 : 4

. The unknown gas is

EASY

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

EASY

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

Which of the following statement is not true?

MEDIUM

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

Diffusion of

{CH}_{4} (g)

and

O_{2} (g)

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

EASY

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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:

MEDIUM

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

X

. The molecular weight of gas

X

EASY

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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}

HARD

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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)

MEDIUM

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

Represent the union of two sets by Venn diagram for each of the following.

$X = {x | x$ is a prime number between $80$ and $100}$

$Y = {y | y$ is an odd number between $90$ and $100}$

MEDIUM

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

The ratio of rates of effusion of hydrogen and deuterium under similar conditions is:

MEDIUM

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

HARD

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

HARD

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

27^{o} {C, H}_{2}

gas is leaked through a tiny hole into a vessel for 20 minutes. Another unknown gas, at the same temperature and pressure, as that of

H_{2}

, is leaked through the same hole for 20 minutes. After the effusion of the gases the mixture exerts a pressure of 6 atm. If

H_{2}

is 0.7 mol and volume of vessel is 3 litre, calculate molecular weight of the unknown gas.

EASY

Science>Chemistry>Gaseous State>Graham's Law of Diffusion

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

Important Questions on Gaseous State

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