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A certain volume of argon gas (Molecular weight $= 40$ ) requires $45 s$ to effuse through a hole at a certain pressure and temperature. The same volume of another gas of unknown molecular weight requires $60 s$ to pass through the same hole under the same conditions of temperature and pressure. The molecular weight of the gas is:

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Important Questions on States of Matter: Gases and Liquids

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 12

On the surface of the earth at

1 atm

pressure, a balloon filled with

H_{2}

gas occupies

500 mL

. This volume is

5 / 6

of its maximum stretching capacity. The balloon released left in the air. It starts rising. Calculate the height

(in m)

above which the balloon will burst if the temperature of the atmosphere remains constant and the pressure decreases by

1 mm

for every

100 cm

rise in the height. (nearest integer)

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 13

A chemist has synthesized a greenish yellow gaseous compound of chlorine and oxygen and finds that its density is

7.71 g / L

36 ° C

and

2.88 atm

. Then the molecular formula of the compound will be :

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 14

If a gas is expanded at constant temperature:

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 15

Calculate y (ratio of C_p and C_V) for triatomic linear gas at high temperature. Assume that the contribution of vibrational degree of freedom is 75% :

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 16

Two closed vessel

A

and

B

of equal volume containing air at pressure

P_{1}

and temperature

T_{1}

are connected to each other through a narrow open tube. If the temperature of one is now maintained at

T_{1}

and other at

T_{2}

(where

T_{1} > T_{2}

) then that what will be the final pressure?

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 17

A balloon containing

1 mole air at 1 atm

initially, is filled with further air till pressure increases to

4 atm

. The initial diameter of the balloon is

1 m

and the pressure at each stage is proportion to diameter of the balloon. How many of moles of air added to change the pressure from

1 atm to 4 atm

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 18

For the reaction

2 {NH}_{3} (g) \to N_{2} (g) + 3 H_{2} (g)

. What is the

%

{NH}_{3}

converted if the mixture diffuses twice, as fast as that of

{SO}_{2}

under similar conditions

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Beta Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>EXERCISE-2>Q 19

Pd v / s . P

(where P denotes pressure in atm and d denotes density in

gm / L

) is plotted for

H_{2}

gas (ideal gas) at a particular temperature. If

{[\frac{d}{dP} (Pd)]}_{P = 8.21 atm} = 10

, then the temperature will be:

Important Questions on States of Matter: Gases and Liquids

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