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What is the value of k(c) for the reacti...

What is the value of `k_(c)` for the reaction at 1473 K
`I_(2)(g) hArr 2I(g)`
when one mode of iodic gas is introduced into an evacuated one litre flask so that only 5% of it gets dissociated ?

A

0.0105

B

0.046

C

0.034

D

0.5

Text Solution

Verified by Experts

The correct Answer is:
A
For this reaction `I_(2)(g) rarr 2I(g)`
`K_(c) = [I]^(2)/[I_(2)] = (2x)^(2)/(1-x)`
As degree of dissociation of 5%
x = 0.05
`K_(c) = (2 xx 0.05)^(2)/(1-0.05) = 0.01/0.95 = 0.0105`
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