\({K_c\over K_p}\) for the reaction,
N₂(g) + 3H₂(g) ⇌ 2NH₃(g) is ___________

(a)

\({1\over RT}\)

(b)

\(\sqrt{RT}\)

(c)

RT

(d)

(RT)²

In which of the following equilibrium, K_P and K_C are not equal ?

(a)

2 NO(g) ⇌ N₂(g) + O₂(g)

(b)

SO₂ (g) + NO₂ ⇌ SO₃(g) + NO(g)

(c)

H₂(g) + I₂(g) ⇌ 2HI(g)

(d)

PCl₅ (g) ⇌ PCl₃(g) + Cl₂(g)

The values of K_P1 and K_P2 for the reactions
X ⇌ Y + Z
A ⇌ 2B are in the ratio 9 : 1 if degree of dissociation and initial concentration of X and A be equal then total pressure at equilibrium P₁ and P₂ are in the ratio __________

(a)

36 : 1

(b)

1 : 1

(c)

3 : 1

(d)

1 : 9

In a chemical equilibrium, the rate constant for the forward reaction is 2.5 \(\times\)10² and the equilibrium constant is 50. The rate constant for the reverse reaction is ____________

(a)

11.5

(b)

5

(c)

2 x 10²

(d)

2 x 10^-3

The equilibrium constants of the following reactions are:

N2 + 3H2 ⇌ 2NH3   :	K1
N2 + O2 ⇌ 2NO      :	K2
H2 + ½O2 ⇌ H2O   :	K3

The equilibrium constant (K) for the reaction ;
\({ 2NH }_{ 3 }+5/2{ O }_{ 2 }\overset { K }{ \rightleftharpoons } 2NO+{ 3H }_{ 2 }{ O },\) will be

(a)

\(K_2^3{K_3\over K_1}\)

(b)

\(K_1{K_3^3\over K_2}\)

(c)

\(K_2{K_3^3\over K_1}\)

(d)

\(K_2{K_3\over K_1}\)

Hydrogen (a moles) and iodine (b moles) react to give 2x moles of the HI at equilibrium. The total number of moles at equilibrium is _____________

(a)

a + b + 2x

(b)

(a - b) + (6  - 2x)

(c)

(a + b)

(d)

a + b - x

For reaction, \(2A+B\rightleftharpoons 2C,\ K=x\) . Equilibrium constant for \(C\rightleftharpoons A+1/2B\) will be ____________

(a)

x

(b)

\(\cfrac { x }{ 2 } \)

(c)

\(\cfrac { 1 }{ \sqrt { x } } \)

(d)

\(\sqrt { x } \)

In which of the following equilibrium, change in pressure will not affect the equilibrium?

(a)

\({ N }_{ 2\left( g \right) }+3{ H }_{ 2\left( g \right) }\rightleftharpoons 2NH_{ 3\left( g \right) }\)

(b)

\({ H }_{ 2\left( g \right) }+I_{ 2\left( g \right) }\rightleftharpoons 2HI_{ \left( g \right) }\)

(c)

\({ PCI }_{ 5\left( g \right) }\rightleftharpoons { PCI }_{ 3\left( g \right) }+CI_{ 2\left( g \right) }\)

(d)

\({ N }_{ 2 }{ O }_{ 4\left( g \right) }\rightleftharpoons 2NO_{ 2\left( g \right) }\)

Ice and water are placed in a closed container at a pressure of 1 atm and 273.15 K temperature. If pressure of the system is increased by 2 atm keeping temperature constant the correct observation would be __________

(a)

The amount of ice increases

(b)

Volume of the system increases

(c)

The liquid phase disappears completely

(d)

The solid phase (ice) disappears completely

A cylinder filled with a movable piston contains liquid water in equilibrium with water vapour at 25°C. Which one of the following operations results in a decrease in the equilibrium vapour pressure?

(a)

Moving piston downward a short distance

(b)

Removing a small amount of the liquid water

(c)

Dissolving salt in the water

(d)

Removing. a small amount of vapour

2H_2(g) + CO_2(g) CH₃OH_(g)' \(\Delta \)H = -92.2 kJ Which of the following condition will shift the equilibrium in the forward direction?

(a)

Temperature of the system is increased

(b)

CO is removed

(c)

CH₃0H is added

(d)

The pressure of the system is increased

If K_l is the equilibrium constant at temperature T₁ and is the equilibrium constant at temperature T₂ and if T₂ > T₁and reaction is endothermic then ___________

(a)

K₂>K₁

(b)

K₂1

(c)

K₂=K₁

(d)

All of these

For the reaction \(A+3B\rightleftharpoons 2C+D\) initial mole of A is twice that of B.1f at equilibrium moles of B and C are equal, then percent of B reacted is ____________

(a)

10%

(b)

20%

(c)

40%

(d)

60%

For the reaction \(CO_{ \left( g \right) }+2H_{ 2\left( g \right) }\rightleftharpoons { CH }_{ 3 }{ OH }_{ \left( g \right) }\) If active mass of CO is kept constant and active mass of H₂ is tripled, the rate of forward reaction will become ____________

(a)

Three times

(b)

Six times

(c)

Eight times

(d)

Nine times

Statement I: In dissociation of PCI₅ to PCl₃ and Cl₂,K_p> K_c
Statement II : In dissociation of PCI₅, ∆n_g = -ve and so K, > K_c

(a)

Statement I & II are correct and statement II is the correct explanation of statement 1.

(b)

Statement I & II are correct but statement II is not the correct explanation of statement I.

(c)

Statement I is correct but statement II is wrong

(d)

Statement I is wrong but statement II is correct

Which of the following does not alter the equilibrium?

(a)

catalyst

(b)

concentration

(c)

temperature

(d)

pressure

Statement I. Addition of an inert gas at constant volume has no effect on equilibrium.
Statement II. When an inert gas is added, the total number of moles of gases present in the container increases and total pressure also increases, the partial pressure of the products and reactants are unchanged.

(a)

Statement I and II are correct but statement II is not the correct explanation of I

(b)

Statement I and II are correct and statement II is the correct explanation of I.

(c)

Statement I is correct but statement II is not correct.

(d)

Statement I is wrong but statement II is correct

If dis ociation for reaction PCI₅ ⇌ PCl₃ + CI₂ is 20% at 1 atm pressure. Calculate the value of K_c·

(a)

0.04

(b)

0.05

(c)

0.07

(d)

0.06

In the reaction N₂ + 3H₂ ⇌ 2NH₃ + x kCal, one mole of N₂ reacts with 3 moles of H₂ at equilibrium. Then the value of ∝ (degree of dissociation) is approximately ________. P is the pressure at equilibrium 

(a)

\(\frac { P\sqrt { 27{ K }_{ P } } }{ 8 } \)

(b)

\(\frac { 8P }{ { K }_{ P }\sqrt { 27 } } \)

(c)

\(\frac { P\sqrt { 27 } }{ 8{ K }_{ P } } \)

(d)

\(\frac{n}{v}\)