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At a certain temperature and a total pre...

At a certain temperature and a total pressure of `10^(5)` Pa, iodine vapours contain 40% by volume of iodine atoms `[I_(2(g))iff2I_((g))]`.
`K_(p)` for the equilibrium will be

A

`0.67`

B

`1.5`

C

`2.67xx10^(4)`

D

`9.0xx10^(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
Partial pressure of I atoms `(P_(I))`
`=(40)/(100)xx10^(5)Pa=0.40xx10^(5)Pa`
Partial pressure of `I_(2)(P_(I_(2)))=(60)/(100)xx10^(5)Pa=0.60xx10^(5)Pa`
`K_(p)=(P_(I)^(2))/(P_(I_(2)))=((0.4xx10^(5))^(2))/(0.60xx10^(5))=2.67xx10^(4)`
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