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Ammonium hydrogen sulphide dissociates a...

Ammonium hydrogen sulphide dissociates according to the equation :
`NH_4 HS(s) hArr NH_3(g)+H_2S(g)`
The total pressure at equilibrium at 400 K is found to be 1 atm.The equilibrium constant `K_p` of the reaction is :

A

`1 atm^2`

B

`0.25 atm^2`

C

0.5 atm

D

0.25 atm

Text Solution

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The correct Answer is:
B
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