KVPY SX SB Exam 2013 Question Paper

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Question : 106 of 120

Marks: +1, -0

Consider the equilibria (1) and (2) with equilibrium constants

K_1

and

K_ 2

, respectively.

SO_2(g)+1/2O_2(g) ⇌ SO_3 (g)

......(1)

2SO_3(g)⇌ 2SO_2(g)+O_2(g)

.........(2)

K_1

and

K_ 2

are related as

$2K_1=K_2^2$
$K_1^2=1/K_2$
$K_2^2=1/K_1$
$K_2=2/K_1^2$

Solution:

\K_1=[\SO_3]/{[\O_2]^{1/2}[\SO_2]}

\K_2={[\SO_2]^2[\O_2]}/[\SO_3]^2

∴\K_2=1/\K_1^2

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