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N(2)O(4) harr 2NO(2), N(2)O(4(g)) dissoc...

`N_(2)O_(4) harr 2NO_(2), N_(2)O_(4(g))` dissociates until the partial pressures of `N_(2)O_(4)` and `NO_(2)` become equal, initial pressure of `N_(2)O_(4)` is 9 atmosphere. What is `K_(P)` ?

A

6 atm

B

12 atm

C

9 atm

D

8 atm

Text Solution

Verified by Experts

The correct Answer is:
A

partial pressure are equal `implies a-x=2x` (`:. P prop n`)
`implies x=(a)/(3) implies PNO_(2)=2 xx (9)/(3)=6 atm =P_(N_(2)O_(4))`
`K_(P)=(P_(NO_(2))^(2))/(P_(N_(2)O_(4)))=(6^(2))/(6)=6`atm
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