a CuSO 4 . 5 H 2 O ( s ) ⇌ CuSO 4 . 3 H 2 O ( s ) + 2 H 2 O ( g ) K p = 4 × 10 - 4 atm 2 b Na 2 SO 4 . 10 H 2 O ( s ) ⇌ Na 2 SO 4 . 5 H 2 O ( s ) + 5 H 2 O ( g ) K p = 2 . 43 × 10 - 9 atm 5 c Na 2 S 2 O 3 . 5 H 2 O ( s ) ⇌ Na 2 S 2 O 3 . 2 H 2 O ( s ) + 3 H 2 O ( g ) K p = 6 . 4 × 10 - 5 atm 3 What is the order of partial pressure of water vapours at equilibrium and relative humidity respectively?

c > a > b Partial pressure. c > a > b Relative humidity.

c < b < a Partial pressure. c > b > a Relative humidity.

a > c > b Partial pressure. a > c > b Relative humidity.

a > c > b Partial pressure. a < c < b Relative humidity.

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An ideal gas filled at pressure of $2$ atm and temp of $300 K,$ in a balloon is kept in vacuum with in a large insulated container. The wall of balloon is punctured then container temperature:

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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 127

$(a)$ ${CuSO}_{4} . 5 H_{2} O (s) ⇌ {CuSO}_{4} . 3 H_{2} O (s) + 2 H_{2} O (g)$ $K_{p} = 4 \times 10^{- 4} {atm}^{2}$

$(b)$ ${Na}_{2} {SO}_{4} . 10 H_{2} O (s) ⇌ {Na}_{2} {SO}_{4} . 5 H_{2} O (s) + 5 H_{2} O (g)$ $K_{p} = 2.43 \times 10^{- 9} {atm}^{5}$

$(c)$ ${Na}_{2} S_{2} O_{3} . 5 H_{2} O (s) ⇌ {Na}_{2} S_{2} O_{3} . 2 H_{2} O (s) + 3 H_{2} O (g)$ $K_{p} = 6.4 \times 10^{- 5} {atm}^{3}$

What is the order of partial pressure of water vapours at equilibrium and relative humidity respectively?

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 128

The vapour pressure of water at

80 ° C

355 torr

. A

100 mL

vessel contained water-saturated oxygen at

80 ° C

, the total gas pressure being

760 torr

. The contents of the vessel were pumped into a

50 mL

vessel at the same temperature. What were the partial pressures of oxygen and water vapour, respectively and the total pressure in the final equilibrium state? Neglect the volume of water which might condense.

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 129

A vessel has nitrogen gas and water vapours in equilibrium with liquid water at a total pressure of

1 atm

. The partial pressure of water vapours is

0.3 atm

. If the volume of this vessel is reduced to one-third of its original volume, at the same temperature, then, find the total pressure of the system. (Neglect the volume occupied by liquid water)

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 130

When a liquid that is immiscible with water was steam distilled at

95.2 ° C

at a total pressure of

748 torr,

the distillate contained

1.25 g

of the liquid per gram of water. The vapour pressure of water is

648 torr

95.2 ° C,

what is the molar mass of liquid?

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-2>Q 1

$I, II, III$ are three isotherms respectively at $T_{1}, T_{2}$ and $T_{3}$ as shown in graph. Temperature will be in order:

Question Image

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-2>Q 2

40 ml

of a mixture of

H_{2}

and

O_{2}

18 ° C

and

1 atm

pressure was sparked so that the formation of water was complete. The remaining pure gas had a volume of

10 ml

18 ° C

and

1 atm

pressure. If the remaining gas was

H_{2}

, the mole fraction of

H_{2}

in the

40 ml

mixture is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-2>Q 3

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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Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-2>Q 4

A vessel of volume

5

litre contains

1.4 g

of nitrogen at a temperature

1800 K

. The pressure of the gas is

30 %

of its molecules are dissociated into atoms at this temperature is:

An ideal gas filled at pressure of 2 atm and temp of 300 K, in a balloon is kept in vacuum with in a large insulated container. The wall of balloon is punctured then container temperature:

Important Questions on States of Matter: Gases and Liquids

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An ideal gas filled at pressure of $2$ atm and temp of $300 K,$ in a balloon is kept in vacuum with in a large insulated container. The wall of balloon is punctured then container temperature: