At a given temperature, a closed vessel contains `NH_3` gas and solid `NH_4HS`. The pressure of `NH_3` gas in the vessel is 0.50 atm. On dissociation, `NH_4HS` produces `NH_3` and `H_2S` gases. The total pressure in the flask at equilibrium is 0.84 atm. The equilibrium constant for the dissociation reaction (KP) of `NH_4HS` is-

Options

A. `0.30atm^2`
B. `0.16atm^(-2)`
C. `0.11atm^2`
D. `0.22atm^(-2)`

Answer

C