By Team Aakash Byju's | 21st November 2022

The Relation Between Kp and Kc for the Reaction  2NO(g) + CI2(g) ⇌ 2NOCI(g) Is?

The options are:

K   = K

K   = K (RT)

K   =

K

RT

K   =

K

RT

(    )

2

A

B

C

D

p

p

p

p

c

c

c

c

Detailed Explanation

The right answer is

K   = 

P

Arrow

Kc

RT

option C.

Kp and Kc are the equilibrium constants of ideal gas mixtures considered under reversible reactions.

Reversible Reaction

Forward Reaction

Backward Reaction

The relation between Kp and Kc is represented as 

Vapour Pressure

K

∆ng

=K  [RT]

p

c

We know that, ∆ng=mole of product- mole            of reactant From the above equation, we have ∆ng = 2-(2+1)            ∆ng = 2-(3)            ∆ng = -1.

Substituting for ∆ng, 

-1

K

=K  [RT]

p

c

K   = 

P

RT

⇒

K

c

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