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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Which of the following is not correct in case of kinetic theory of gases?

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Important Questions on States of Matter

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

Predict the correct order of rate of diffusion of the following molecules.

MEDIUM

Chemistry>Physical Chemistry>States of Matter>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})

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

The internal energy of one mole of an ideal gas is given by the expression:

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

At what temperature

(

K)

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

t ° C ?

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

At room temperature, the average speed of Helium is higher than that of Oxygen by a factor of:

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

What is the kinetic energy (in

ergs

) of the nitrogen molecule at

- 73 ° C

HARD

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

If the distribution of molecular speeds of a gas is as per the figure shown below, then the ratio of the most probable, the average, and the root mean square speeds, respectively, is

Question Image

MEDIUM

Chemistry>Physical Chemistry>States of Matter>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 :

MEDIUM

Chemistry>Physical Chemistry>States of Matter>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)

EASY

Chemistry>Physical Chemistry>States of Matter>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:

MEDIUM

Chemistry>Physical Chemistry>States of Matter>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

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

Which of the following is not an assumption of the kinetic theory of gases?

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

The quantity

h v / K_{B}

corresponds to

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

The kinetic energy in

J

1

mole of

N_{2}

27 ° C

is:

(R = 8.314 J {mol}^{- 1} K^{- 1})

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

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

x m / \sec

at a pressure

p atm

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

2 p atm

and constant temperature ?

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

What will be the relation between the

T_{1}

of gas

1

with

M_{1} = 56

and

T_{2}

of gas

2

with

M_{2} = 44

if the average speed of gas

1

is equal to most probable speed of gas

2 ?

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

The rms velocity of hydrogen is

\sqrt{7}

times the

rms

velocity of nitrogen. If

T

is the temperature of the gas, then

MEDIUM

Chemistry>Physical Chemistry>States of Matter>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

EASY

Chemistry>Physical Chemistry>States of Matter>Kinetic Molecular Theory of Gases

The ratio of root-mean-square velocity of hydrogen at

50 K

to that of nitrogen at

500 K

is closest to

EASY

Chemistry>Physical Chemistry>States of Matter>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?

Which of the following is not correct in case of kinetic theory of gases?

Important Questions on States of Matter

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