Equilibrium Question 586

Question: If equilibrium constant for reaction 2AB ⇌ A2+B2 , is 49, then the equilibrium constant for reaction AB ⇌ 12A2+12B2 , will be [EAMCET 1998; MP PMT 2003]

Options:

A) 7

B) 20

C) 49

D) 21

Show Answer

Answer:

Correct Answer: A

Solution:

2AB ⇌ A2+B2

Kc=[A2][B2][AB]2 For reaction AB ⇌ 12A2+12B2

Kc′=[A2]1/2;[B2]1/2;[AB] ; Kc′=Kc=49=7 .

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