Identify the correct labels of A , B and C in the following graph from the options given below: Root mean square speed V r m s ; most proable speed V m p ; Average speed V a v

A - V mp ; B - V av ; C - V rms

A - V mp ; B - V rms ; C - V av

A - V av ; B - V rms ; C - V mp

A - V rms ; B - V mp ; C - V av

For gaseous state, if most probable speed is denoted by C * , average speed by C ¯ and root mean square speed by C , then for many molecules, what is the ratios of these speeds?

C * : C - : C = 1 : 1 .128 : 1 .225

C * : C - : C = 1 : 1 .225 : 1 .128

C * : C - : C = 1 .225 : 1 .128 : 1

C * : C - : C = 1 .128 : 1 .225 : 1

EASY

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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

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Important Questions on States of Matter: Gases and Liquids

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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

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

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

Two gases

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B

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

Initially, the root-mean-square (RMS) velocity of

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. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new RMS velocity will be:

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Diffusion of

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The temperature at which oxygen molecules have the same root mean square speed as helium atoms have at 300 K is : (Atomic masses : He = 4 u, O = 16 u)

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

X

. The molecular weight of gas

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

If the kinetic energy and

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4.0 kJ {mol}^{- 1}

and

5.0 \times 10^{4} cm s^{- 1}

, respectively. The molecular weight of the gas is

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

10

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H_{2}

and

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

' X'

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54 g {mol}^{- 1}

. The molar mass of

X

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

Points

I, I I

and

I I I

in the following plot respectively correspond to (

V_{m p} :

most probable velocity)

Question Image

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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}

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

Identify the correct labels of

A, B

and

C

in the following graph from the options given below:
Question Image

Root mean square speed

(V_{r m s});

most proable speed

(V_{m p});

Average speed

(V_{a v})

EASY

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

For gaseous state, if most probable speed is denoted by

C^{*}

, average speed by

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and root mean square speed by

C

, then for many molecules, what is the ratios of these speeds?

MEDIUM

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

At what temperature

(

K)

, the most probable velocity of ozone gas is equal to RMS velocity of oxygen gas at

t ° C ?

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

Among the following, the plot that shows the correct marking of most probable velocity

(V_{MP}),

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(\bar{V}),

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(V_{RMS})

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

If the r.m.s. speed of a gaseous molecule is

x m / \sec

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, then what will be the r.m.s. speed at a pressure

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and constant temperature ?

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

Which of the following statement is not true?

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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

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O_{2}

{dm}^{3}

which diffuses under the similar condition in

30

seconds will be (atomic mass of sulphur

= 32 u

);

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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

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

Important Questions on States of Matter: Gases and Liquids

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