In which one of the following equilibria, K p ≠ K c ?

N O 2 g + S O 2 g ⇌ N O g + S O 3 g

EASY

Earn 100

What is a heterogeneous equilibrium?

Important Questions on Equilibrium

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

In which one of the following equilibria,

K_{p} \neq K_{c} ?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

For the non-stoichiometry reaction,

2 A + B \to C + D

, the following kinetic data were obtained in three separate experiments, all at

298 K

Initial Concentration (A)	Initial Concentration (B)	Initial rate of formation of C $({mol L}^{-} S^{-})$
$0.1 M$	$0.1 M$	$1.2 \times 1 0^{- 3}$
$0.1 M$	$0.2 M$	$1.2 \times 1 0^{- 3}$
$0.2 M$	$0.1 M$	$2.4 \times 1 0^{- 3}$

The rate law for the formation of

C

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

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)

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

For a reaction

2 A_{(g)} ⇌ 2 B_{(g)} + C_{(g)}, K_{c} = 3.75 \times 10^{- 6}

1069 K

. The approximate value of

K_{p}

for this reaction at the same temperature is

(R = 0.082 L bar {mol}^{- 1} K^{- 1})

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The equilibrium constant for the reaction is

P_{4} (s) + 50_{2} (g) ⇌ P_{4} 0_{10} (s)

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

For the given equilibrium reaction,

2 A (g) ⇌ 2 B (g) + C (g)

the equilibrium constant

(K_{c})

1000 K

4 \times 10^{- 4}

. Calculate

K_{p}

for the reaction at

800 K

temperature

HARD

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

20 litre

container at

400 K

contains

{CO}_{2} (g)

at pressure

0.4 atm

and an excess of

SrO

(neglect the volume of solid

SrO

). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when the pressure of

{CO}_{2}

attains its maximum value, will be:

(Given that : {SrCO}_{3} (s) ⇌ SrO (s) + {CO}_{2} (g), K_{p} = 1 .6 atm)

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The decay profiles of three radioactive species

A, B

and

C

are given below:

Question Image

These profiles imply that the decay constants

k_{A}, k_{B}

and

k_{C}

follow the order

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

Using the data provided, find the value of equilibrium constant for the following reaction at $298 K$ and $1$ atm pressure. ${NO}_{(g)} + \frac{1}{2} O_{2} (g) ⇌ {NO}_{2} (g)$
$Δ_{f} H^{0} ({NO}_{(g)}) = 90 .4 kJ . {mol}^{- 1}$

$Δ_{f} H^{0} ({NO}_{2} (g)) = 32 .48 kJ \cdot {mol}^{- 1}$

${ΔS}^{\circ} at 298 K = - 70 .8 J \cdot K^{- 1} \cdot {mol}^{- 1}$

$antilog (0 .50) = 3162$

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

Which one of the following is NOT an example of heterogeneous equilibrium?

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The value of

K_{C}

for the equilibrium reaction:

{CO}_{2 (g)} + C_{(s)} ⇌ 2 {CO}_{(g)}

T (K)

0.036 .

If the equilibrium concentration of

{CO}_{2 (g)}

0.004 M,

the concentration of

{CO}_{(g)}

{molL}^{- 1}

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

Among the following, the correct statement about the chemical equilibrium is.

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The relationship between

K_{p}

and

K_{c}

K_{p} = K_{c} {(RT)}^{Δn}

. What would be the value of

Δn

for the reaction,

{NH}_{4} Cl (s) ⇌ {NH}_{3} (g) + HCl (g)

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The value of $K_{c}$ for the reaction:

$A + 3 B ⇌ 2 C at 400 ° C$ is $0.5 mol L^{- 1} .$ Calculate the value of $K_{P}$ in $atm$ .

HARD

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The reaction

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

is in equilibrium in a closed vessel at $298 K .$ The partial pressure (in atm) of ${CO}_{2} (g)$ in the reaction vessel is closest to:

[Given: The change in Gibbs energies of formation at $298 K$ and $1$ bar for

$CaO (s) = - 603.501 kJ {mol}^{- 1}$

${CO}_{2} (g) = - 394.389 kJ {mol}^{- 1}$

${CaCO}_{3} (s) = - 1128.79 kJ {mol}^{- 1}$

Gas constant $R = 8.314 J K^{- 1} {mol}^{- 1}$ ]

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

The

pH

of the blood is maintained by buffer system given by

HARD

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

What are the values of

\frac{K_{p}}{K_{c}}

for the following reactions at

300 K

respectively?

(At

300 K, RT = 24 .62 {dm}^{3} atm {mol}^{- 1}

)

N_{2} (g) + O_{2} (g) ⇌ 2 NO (g); \frac{K_{p}}{K_{c}} = x_{1}

N_{2} O_{4} (g) ⇌ 2 {NO}_{2} (g); \frac{K_{p}}{K_{c}} = x_{2}

N_{2} (g) + 3 H_{2} (g) ⇌ 2 {NH}_{3} (g); \frac{K_{p}}{K_{c}} = x_{3}

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

There are two statements, one labelled as Assertion (A) and the other as Reason (R). Examine both the statements carefully and mark the correct choice.

(A)

At equilibrium, the mass of each of the reactants and products remains constant.

(R)

At equilibrium, the rate of forward reaction is equal to the rate of backward reaction.

EASY

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

For the equilibrium

A ⇌ B

, the variation of the rate of the forward (a) and reverse (b) reaction with time is given by:

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Heterogeneous Equilibria

An example of reversible reaction is

What is a heterogeneous equilibrium?

Important Questions on Equilibrium

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