What will be the pressure of the gas mixture when 0 . 5 L of H 2 at 0 . 8 bar and 2 . 0 L of oxygen at 0 . 7 bar are introduced in a 1 L vessel at 27 ° C ?

According to ideal gas equation, PV = nRT The process is taking place under isothermal conditions. So, P 1 V 1 = P 2 V 2 The final volume for both the gases is equal to the volume of the container. Partial pressure of hydrogen gas, P H 2 = 0 . 8 × 0 . 5 1 = 0 . 4 bar Partial pressure of oxygen gas, P O 2 = 0 . 7 × 2 1 = 1 . 4 bar As we know, total pressure P = P H 2 + P O 2 P = 0 . 4 + 1 . 4 bar = 1 . 8 bar Hence, pressure of the gas mixture is 1 . 8 bar .

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Find the lifting power of a $100 litre$ balloon filled with helium at $730 mm$ and $25 ° C$ . (Density of air $= 1.25 g L^{- 1}$ ).

Important Questions on States of Matter: Gases and Liquids

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 20

The drain cleaner, Drainex contains small bits of aluminium which react with caustic soda to produce dihydrogen. What volume of dihydrogen at

20^{o} C

and one bar will be released when

0.15 g

of aluminium reacts?

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 21

What will be the pressure of the gas mixture when

0.5 L

H_{2}

0.8 bar

and

2.0 L

of oxygen at

0.7 bar

are introduced in a

1 L

vessel at

27 ° C

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 22

Density of a gas is found to be $5.46 g / {dm}^{3}$ at $300 K$ and $2 bar$ pressure. What will be its density at STP?

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 23

A mixture of dihydrogen and dioxygen at one bar pressure contains

20 %

by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 24

A vessel contains

H_{2}

and

O_{2}

in the molar ratio of

8 : 1

respectively. This mixture of gases is allowed to diffuse through a hole, find composition of the mixture coming out of the hole.

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 25

In a tube of length $5 m$ having $2$ identical holes at the opposite ends. $H_{2}$ and $O_{2}$ are made to effuse into the tube from opposite ends under identical conditions. Find the point where gases will meet for the first time.

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 26

Pressure of $1 g$ of an ideal gas A at $27^{o} C$ is found to be $2$ bar. When $2 g$ of another ideal gas B is introduced in the same flask at same temperature the pressure becomes $3 bar$ . Find a relationship between their molecular masses.

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 27

2.9 g

of a gas at

95^{o} C

occupied the same volume as

0.184 g

of dihydrogen at

17 ° C,

at the same pressure. What is the molar mass of the gas?

Find the lifting power of a 100 litre balloon filled with helium at 730 mm and 25°C. (Density of air =1.25 g L-1).

Important Questions on States of Matter: Gases and Liquids

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Find the lifting power of a $100 litre$ balloon filled with helium at $730 mm$ and $25 ° C$ . (Density of air $= 1.25 g L^{- 1}$ ).