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At $46 ° C, K_{p}$ for the reaction $N_{2} O_{4} (g) ⇌ 2 {NO}_{2} (g)$ is $0.667 atm .$ Compute the percent dissociation of $N_{2} O_{4}$ at $46 ° C$ at a total pressure of $380$ Torr.

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Important Questions on Equilibrium

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JEE Main/Advance

IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 17

At some temperature and under a pressure of

4 atm, {PCl}_{5}

10 %

dissociated. Calculate the pressure at which

{PCl}_{5}

will be

20 %

dissociated, temperature remaining same.

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 18

In a mixture of

N_{2}

and

H_{2}

in the ratio of

1 : 3

64

atmospheric pressure and

300 ° C

, the percentage of ammonia under equilibrium is

33.33

by volume. If the equilibrium constant of the reaction using the equation.

$N_{2} (g) + 3 H_{2} (g) ⇌ 2 {NH}_{3} (g) is 1.3 \times 10^{- Z}$

then calculate value of $z$ .

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 19

The system

N_{2} O_{4} ⇌ 2 {NO}_{2}

maintained in a closed vessel at

60 ° C

& pressure of

5

atm has an average (i.e. observed) molecular weight of

69,

at what pressure at the same temperature would the observed molecular weight be

(\frac{230}{3})

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IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 20

The vapour density of

N_{2} O_{4}

at a certain temperature is

30 .

Calculate the percentage dissociation of

N_{2} O_{4}

at this temperature.

N_{2} O_{4} (g) ⇌ 2 {NO}_{2} (g)

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 21

Solid Ammonium carbamate dissociates as :

{NH}_{2} {COONH}_{4} (s) ⇌ 2 {NH}_{3} (g) + {CO}_{2} (g) .

In a closed vessel solid ammonium carbamate is in equilibrium with its dissociation products. At equilibrium, ammonia is added such that the partial pressure of

{NH}_{3}

at new equilibrium now equals the original total pressure. Calculate the ratio of total pressure at new equilibrium to that of original total pressure.

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IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 22

A sample of

{CaCO}_{3} (s)

is introduced into a sealed container of volume

0.821

litre & heated to

1000 K

until equilibrium is reached. The equilibrium constant for the reaction

{CaCO}_{3} (s) ⇌ CaO (s) + {CO}_{2} (g)

4 \times 10^{2}

atm at this temperature. Calculate the mass of

CaO

present at equilibrium.

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Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 23

Anhydrous calcium chloride is often used as a dessicant. In the presence of excess of

{CaCl}_{2}

, the amount of the water taken up is governed by

K_{p} = 6.4 \times 10^{85}

for the following reaction at room temperature,

{CaCl}_{2} (s) + 6 H_{2} O (g) ⇌ {CaCl}_{2} \cdot 6 H_{2} O (s)

. The equilibrium vapour pressure of water in a closed vessel that contains

{CaCl}_{2} (s)

x \times 10^{- y}

then calculate value of

\frac{y}{x}

EASY

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IMPORTANT

Beta Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>EXERCISE-3>Q 24

20.0

grams of

{CaCO}_{3} (s)

were placed in a closed vessel, heated & maintained at

727 ° C

under equilibrium

{CaCO}_{3} (s) ⇌ CaO (s) + {CO}_{2} (g)

and it is found that

75 %

{CaCO}_{3}

was decomposed. What is the value of

K_{p}

? The volume of the container was

15

litres.

At 46°C,Kp for the reaction N2O4(g)⇌2NO2(g) is 0.667 atm. Compute the percent dissociation of N2O4 at 46°C at a total pressure of 380 Torr.

Important Questions on Equilibrium

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At $46 ° C, K_{p}$ for the reaction $N_{2} O_{4} (g) ⇌ 2 {NO}_{2} (g)$ is $0.667 atm .$ Compute the percent dissociation of $N_{2} O_{4}$ at $46 ° C$ at a total pressure of $380$ Torr.