The degree of dissociation of PCl5 ($\mathrm{\alpha }$) obeying the equilibrium,

PCl5 (g$⇌$ PCl3 (g) + Cl2 (g), is approximately related to the pressure at equilibrium by:

(1) $\alpha \propto P$

(2)  $\alpha \propto 1/\sqrt{P}$

(3)  $\alpha \propto 1/{\mathrm{P}}^{2}$

(4)  $\alpha \propto 1/{P}^{4}$

Concept Questions :-

Introduction To Equilibrium
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

In a system:  If the concentration of C at eqilibrium is increased by a factor 2, it will cause the eqilibrium concentration of B to change to:

(1) two times of its original value

(2) one half of its original value

(3) 2$\sqrt{2}$ times of its original value

(4) $\frac{1}{2\sqrt{2}}$ times of its original value

Concept Questions :-

Kp, Kc - and Factors Affecting them
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

A weak acid, HA has a Ka of 1.00 x 10-5. If 0.100 mole of this acid is dissolved in one litre of water, the percentage of acid dissociated at equibrium is closest to

(1) 99.9%

(2) 1.00%

(3) 99.9%

(4) 0.100%

Concept Questions :-

Ki for Acid ,Base and Salt
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

If little heat is added to ice $⇌$ liquid equilibrium in a sealed container, then:

(1) pressure will rise

(2) temperature will rise

(3) temperature will fall

(4) no change in P and T

Concept Questions :-

Kp, Kc - and Factors Affecting them
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

In the equilibrium,

2SO2(g) + O2 (g) $⇌$2SO3(g), the partial pressure of SO2, O2 and SO3 are 0.662, 0.101 and 0.331 atm respectively. What should be the partial pressure of oxygen so that the equilibrium concentration of SO2 and SO3 are equal.

(1) 0.4 atm

(2) 1.0 atm

(3) 0.8 atm

(4) 0.25 atm

Concept Questions :-

Kp, Kc - and Factors Affecting them
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

Ionisation constant of CH3COOH is 1.7 X 10-5 and concentration of H+ ions is 3.4 X 10-4.Then, find out initial concentration of CH3COOH molecules.

(1) 3.4 X 10-4

(2) 3.4 X 10-3

(3) 6.8 X 10-4

(4) 6.8 X 10-3

Concept Questions :-

Ki for Acid ,Base and Salt
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

The formation of phosgene is represented as,

CO + Cl2 $⇌$COCl2

The reaction is carried out in 500 mL flask. At equilibrium o.3 mole of phosgene, 0.1 mole of CO and 0.1 mole of Cl2 are present. The equilibrium constant of the reaction is:

(1) 30

(2) 15

(3) 5

(4) 3

Concept Questions :-

Introduction To Equilibrium
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

For the equilibrium, PCl5 $⇌$ PCl3 + Cl2,

${\mathrm{K}}_{\mathrm{C}}={\mathrm{\alpha }}^{2}/\left(1-\mathrm{\alpha }\right)\mathrm{V}$, temperature remaining constant:

(1) Kc will increase with the increase in volume

(2) Kc will increase with the decrease in volume

(3) Kc will not change with the change in volume

(4) Kc may increase or decrease with the  change in volume depending upon its numerical value.

Concept Questions :-

Kp, Kc - and Factors Affecting them
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

For the reaction,

PCl5 (g) $⇌$PCl3(g) +Cl2 (g)

The forward reaction at constant temperature is favored by:

(1) introducing an inert gas at constant volume

(2)  introducing chlorine gas at constant volume

(3)  introducing an inert gas at constant pressure

(4) none of the above

Concept Questions :-

Le Chatelier
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:

In the dissociation of 2HI $⇌$H2 + I2, the degree of dissociation will be influenced by the:

(1) addition of inert gas at constant volume

(2) addition of inert gas at constant pressure

(3) increase of temperature

(4) increase of pressure

Concept Questions :-

Kp, Kc - and Factors Affecting them