Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 124

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At equilibrium mixture for the reaction

2H₂S ⇌2H₂+ S₂

had 1 mole of H₂S, 0.2 mole of H₂, and 0.8 mole of S₂ in a
2 litre flask. The value of K_cin mol L^-is

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Important Questions on Equilibrium

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 125

The reaction,

{PCl}_{5} ⇌ {PCl}_{3} + {Cl}_{2}

is started in a five litre container by taking one mole of

{PCl}_{5}

. If

0.3

mole of

{PCl}_{5}

, is there at equilibrium, concentration of

{PCl}_{3}

and

K_{c}

will respectively be:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 126

In the reaction

A (g) + 2 B (g) ⇌ 2 C (g),

2

moles of

A, 3.0

moles of

B

and

2.0

moles of

C

are placed in a

2 L

flask. If equilibrium concentration of

C

is

0.5

mole / L

, the value of equilibrium constant

(K_{c})

will be:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 127

28 g

of

N_{2}

and

6 g

of

H_{2}

were kept at

400 ° C

in

1

litre vessel. The equilibrium mixture contained

17 g

of

{NH}_{3}

. The value of

K_{c}

for the reaction

N_{2} + 3 H_{2} ⇌ 2 {NH}_{3}

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 128

A mixture of

0.3

mole of

H_{2}

and

0.3

mole of

I_{2}

is allowed to react in a

10

litre evacuated flask at

500 ° C

. The reaction is

H_{2} + I_{2} ⇌ 2 HI

, the

K

is found to be

64

. The amount of unreacted

I_{2}

at equilibrium is

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 129

At a certain temperature

50 %

HI

is dissociated at equilibrium. The equilibrium constant for the reaction

2 Hl ⇌ H_{2} + I_{2}

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 130

Equimolar concentrations of

H_{2}

and

I_{2}

are heated to equilibrium in a

2

litre flask. At equilibrium, the forward and the backward rate constants are found to be equal, What percentage of initial concentration of

H_{2}

has reacted at equilibrium for the reaction

H_{2} + I_{2} ⇌ 2 HI

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 131

{PCl}_{5} ⇌ {PCl}_{3} + {Cl}_{2}

in the reversible reaction the moles of

{PCl}_{5}, {PCl}_{3}

and

{Cl}_{2}

are

a, b

and

c

, respectively and total pressure is

P

, value of

K_{p}

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 5 - Equilibrium>Exercise 1>Q 132

For the reaction

A_{2} (g) + 3 B_{2} ⇌ 2 C_{2} (g)

the partial pressure of

A_{2}, B_{2}

at equilibrium are

0.80

atm

and

0.40

atm

, respectively. The pressure of the system is

2.80

atm

. The equilibrium constant

K_{p}

will be