Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 34

HARD

11th CBSE

IMPORTANT

Earn 100

$A + B ⇌ C + D$ . If initially the concentrations of $A$ and $B$ are equal but at equilibrium concentration of $D$ will be twice that of $A$ , then what will be the equilibrium constant of the reaction?

50% studentsanswered this correctly

Important Questions on Equilibrium in Physical and Chemical Processes

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 35

The equilibrium constant at

298 K

for the reaction

A + B ⇌ C + D

is

100

. If the initial concentration of all the four species were

1 M

each, then equilibrium concentration of

D (in mol L^{- 1})

will be

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 36

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

. If equilibrium pressure is

3 atm

for the above reaction,

K_{p}

for the reaction is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 37

The equilibrium pressure for the reaction

{MSO}_{4} . 2 H_{2} O (s) ⇌ {MSO}_{4} (s) + 2 H_{2} O (g)

is

π / 4 atm

at

400 K

. The

K_{p}

for the given reaction (in

{atm}^{2}

) is

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 38

For the reaction :

H_{2} (g) + {CO}_{2} (g) ⇌ CO (g) + H_{2} O (g)

, if the initial pressure of

[H_{2}] = [{CO}_{2}]

and

x moles / litre

of hydrogen is consumed at equilibrium, the correct expression of

K_{p}

is

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 39

A mixture of

N_{2}

and

H_{2}

in the molar ratio

1 : 3

attains equilibrium when

50 %

of the mixture has reacted. If

P

is the total pressure of the mixture, then partial pressure of

{NH}_{3}

formed is

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 40

For the reaction,

H_{2} + I_{2} ⇌ 2 HI, K = 47.6

. If the initial number of moles of each reactant and product is

1 mole

, then at equilibrium

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 41

The equilibrium constant

(K_{p})

for the decomposition of gaseous

H_{2} O

H_{2} O (g) ⇌ H_{2} (g) + \frac{1}{2} O_{2} (g)

is related to degree of dissociation

(α)

at a total pressure

p

, given by

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 8 - Equilibrium in Physical and Chemical Processes>Competition Focus>Q 42

' a' moles

of

{PCl}_{5}

are heated in a closed container to equilibrate

{PCl}_{5} (g) ⇌ {PCl}_{3} (g) + {Cl}_{2} (g)

at a pressure of

p atm

. If

x moles

of

{PCl}_{5}

dissociate at equilibrium, then