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N2 and H2 are taken in 1:3 molar ratio i...

`N_2 and H_2` are taken in 1:3 molar ratio in a closed vessel to attained the following equilibrium , `N_2(g)+3H_2(g) hArr 2NH_3(g)`
Find `K_p` for reaction at total pressure of 2P if `P_(N_2)` at equilibrium is `P/3`:

A

`1/(3P^2)`

B

`4/(3P^2)`

C

`(4P^2)/3`

D

None

Text Solution

Verified by Experts

The correct Answer is:
B
`N_2(g)+3H_2(g)hArr2NH_3(g)`
At equilibrium `P/3 " " P" " P_(NH_3)" " P/3+P+P_(NH_3)=2P`
`P_(NH_3)=(2P)/3 " " k_p=((2P)/3xx(2P)/3)/((P)/3xxP^3)=1/P^2. 4/3 " "k_p=4/(3P^2)`
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