EASY

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The rates of diffusion of gases $A$ and $B$ of molecular weight $36$ and $64$ are in the ratio

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Important Questions on States of Matter

EASY

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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>Diffusion of Gas

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

X

. The molecular weight of gas

X

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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

1 : 4

. The unknown gas is

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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>Diffusion of Gas

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>Diffusion of Gas

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>Diffusion of Gas

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

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

Which of the following statement is not true?

HARD

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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>Diffusion of Gas

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>Diffusion of Gas

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>Diffusion of Gas

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>Diffusion of Gas

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

HARD

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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

EASY

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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

EASY

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

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

EASY

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

EASY

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

Pressure in a bulb dropped from 2000 to 1500 mm in 47 minute when the contained oxygen leaked through a small hole. The bulb was then completely evacuated. A mixture of oxygen and another gas of molecular weight 79 in molar ratio 1:1 at a total pressure of 4000 mm was introduced. Find the molar ratio of two gases remaining in the bulb after a period of 74 minute.

EASY

Chemistry>Physical Chemistry>States of Matter>Diffusion of Gas

If the 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>Diffusion of Gas

A mixture of

S O_{2}

and

O_{2}

in the molar ratio 16 : 1 is diffused through a pin hole for successive effusions to give a molar ratio 1 : 1 of diffused mixture. Which one are not correct if diffusion is made at same P and T in each operation?

I. Eight operations are needed to get 1 : 1 molar ratio.
II. Rate of diffusion for

S O_{2} : O_{3}

after eight operations in 0.707.
III. Six operations are needed to get 2 : 1 molar ratio for

S O_{2}

and

O_{2}

in diffusion mixture.
IV. Rate of diffusion for

S O_{2}

and

O_{2}

after six operations is 2.41.

The rates of diffusion of gases A and B of molecular weight 36 and 64 are in the ratio

Important Questions on States of Matter

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The rates of diffusion of gases $A$ and $B$ of molecular weight $36$ and $64$ are in the ratio