Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 23

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The equilibrium constants K_P1 and K_P2 for the reactions, $X ⇌ 2 Y and Z ⇌ P + Q$ respectively are in the ratio of 1:9. If the degree of dissociation of X and Z be equal, then the ratio of total pressures at these equilibria

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Important Questions on Equilibrium

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 24

The equilibrium constant

(K_{c})

for the reaction,

N_{2} (g) + O_{2} (g) \to 2 NO (g)

, at temperature,

T

, is

4 \times 10^{- 4}

. The value of

K_{c}

for the reaction

NO (g) \to \frac{1}{2} N_{2} (g) + \frac{1}{2} O_{2} (g)

at the same temperature is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 25

For the reaction

{SO}_{2 (g)} + \frac{1}{2} O_{2 (g)} ⇌ {SO}_{3 (g)}

, if

K_{p} = K_{C} (RT)^{x}

, where the symbols have usual meaning then the value of

x

is: (assuming ideality)

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 26

The standard Gibbs energy change at

300 K

for the reaction

2 A ⇌ B + C

is

2494.2 J

. At a given time, the composition of the reaction mixture is

[A] = \frac{1}{2}, [B] = 2

and,

[C] = \frac{1}{2}

. The reaction proceeds in the:

[R = 8.314 J / K / mol, e = 2.718]

.

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 27

The equilibrium constants at

298 K

for a 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

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 28

The conjugate base of

H_{2} {PO}_{4}^{-}

is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 29

What is the conjugate base of

{OH}^{-}

?

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 30

Hydrogen ion concentration in

mole / L

in a solution of

pH = 5.4

will be:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-3>Q 31

The first and second dissociation constants of an acid

H_{2} A

are

1.0 \times 10^{- 5}

and

5.0 \times 10^{- 10}

respectively. The overall dissociation constant of the acid will be: