Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 3

MEDIUM

11th CBSE

IMPORTANT

Earn 100

A volume of hydrogen measures one cubic decimetre at $20 ° C$ and at a pressure of half an atmosphere. What will be its volume at $10 ° C$ and at $700 mm$ pressure?

Important Questions on States of Matter: Gases and Liquids

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 4

300

litres of ammonia gas at

20 ° C

and

20

atmosphere pressure are allowed to expand in a space of

600

litres capacity and to a pressure of one atmosphere. Calculate the drop in temperature.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 5

One litre flask containing vapours of methyl alcohol (Mol mass

32

) at a pressure of

1 atm

and a temperature

25 ° C

was evacuated till the final pressure was

10^{- 3} mm

. How many molecules of methyl alcohol were left in the flask?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 6

28.32

litres of chlorine were liberated at normal conditions of temperature and pressure. Calculate the volume of the gas at

12 ° C

and

780 mm

pressure.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 7

Temperature at the foot of a mountain is

30 ° C

and pressure is

760 mm

whereas at the top of the mountain these are

0 ° C

and

710 mm

. Compare the densities of the air at the foot and at the top of the mountain.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 1

Calculate the number of moles of hydrogen gas present in

500 {cm}^{3}

of the gas taken at

300 K

and

760 mm

pressure. If this sample of hydrogen is found to have a mass equal to

4.09 \times 10^{- 2} g

, calculate the molar mass of hydrogen.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 2

2.802 g

of

N_{2}

gas is kept in a litre flask at

0 ° C

. Calculate the pressure exerted by the gas.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 3

Calculate the molar volume of a gas at STP.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 5 - States of Matter: Gases and Liquids>PROBLEMS FOR PRACTICE>Q 4

A

500 mL

sample of a gas weighs

0.326 g

at

100 ° C

and

0.500 atm

. What is the molecular mass of the gas?