Consider a mixture of O 2 and N 2 gases at temperature 27 ∘ C . Which of the following relations is correct?

RMS speed of O 2 molecules < RMS speed of N 2 molecules

Average kinetic energy of O 2 molecules < Average kinetic energy of N 2 molecules

Average kinetic energy of O 2 molecules > Average kinetic energy of N 2 molecules

RMS speed of O 2 molecules > RMS speed of N 2 molecules

Consider a mixture of O 2 and N 2 gases at temperature 27 ∘ C . Which of the following relations is correct?

RMS speed of O 2 molecules < RMS speed of N 2 molecules

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

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

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Consider a mixture of $O_{2}$ and $N_{2}$ gases at temperature $27^{\circ} C$ . Which of the following relations is correct?

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Important Questions on States of Matter: Gases and Liquids

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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}

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X

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Diffusion of

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At what temperature

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t ° C ?

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

x m / \sec

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p atm

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

2 p atm

and constant temperature ?

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

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

);

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

If the kinetic energy and

RMS

speed of a gas at a certain temperature are

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>Kinetic Molecular Theory of Gases

10

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H_{2}

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Which of the following statement is not true?

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

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

N_{2}

molecules at certain temperature is

u

. 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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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

Points

I, I I

and

I I I

in the following plot respectively correspond to (

V_{m p} :

most probable velocity)

Question Image

MEDIUM

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

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

(V_{MP}),

average velocity

(\bar{V}),

and root mean square velocity

(V_{RMS})

is :

EASY

Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

For gaseous state, if most probable speed is denoted by

C^{*}

, average speed by

\bar{C}

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>Kinetic Molecular Theory of Gases

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})

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

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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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

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?

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

The rms speed (in m/s) of oxygen molecules of the gas at temperature 300 K, is

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

A balloon filled with ethylene is pricked with a needle and quickly dropped in a tank of

H_{2}

gas under identical conditions. After a while, the balloon will not:

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

The mean speed of the molecules in a gas is given as

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

What will be the temperature when the rms velocity is four times of that at 300 K ?

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Chemistry>Physical Chemistry>States of Matter: Gases and Liquids>Kinetic Molecular Theory of Gases

Which of the following statements are incorrect?

Consider a mixture of O2 and N2 gases at temperature 27∘C. Which of the following relations is correct?

Important Questions on States of Matter: Gases and Liquids

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Consider a mixture of $O_{2}$ and $N_{2}$ gases at temperature $27^{\circ} C$ . Which of the following relations is correct?