5.1 g `NH_(4)SH` is introduced in 3.0 L evacuated flask at `327^(@)C`, 30% of the solid `NH_(4)SH` decomposed to `NH_(3)` and `H_(2)S` as gases. The `K_(p)` of the reaction at `327^(@)C` is :
`(R = 0.082 L atm mol^(-1)K^(-1), "Molar mass of S =" 32 g mol^(-1) , "molar mass of N" = 14 g mol^(-1))`
A. `0.242 xx 10^(-4) atm^(2)`
B. `1 xx 10^(-4) atm^(2)`
C. `4.9 xx 10^(-3) atm^(2)`
D. `0.242 atm^(2)`
