An amount of solid NGH_(4)HS is placed ina flask already containg ammonia gas at a certain temperaturee and 0.50 atm. Pressue. Ammounium hydrogen sulphide decomposes to yield H_(3)and H_(2)S gases in the flask. When the decomposition reaction reaches equlibrium, the total pressure in the flask rises to 0.84 atm. The equilibrium constant for NH_(4)HS decompositions at this temperaturee is

An amount of solid NGH_(4)HS is placed ina flask already containg ammo

1.	An amount of solid NGH_(4)HS is placed ina flask already containg ammonia gas at a certain temperaturee and 0.50 atm. Pressue. Ammounium hydrogen sulphide decomposes to yield H_(3)and H_(2)S gases in the flask. When the decomposition reaction reaches equlibrium, the total pressure in the flask rises to 0.84 atm. The equilibrium constant for NH_(4)HS decompositions at this temperaturee is
Answer» `0.30` `0.18` `0.17` `1.11` SOLUTION :`{:(NH_(4)HShArrNH_(3(g))+H_(2)S_((g))),("""a""0.5atm"),(""a-X ""0.5+x ""x):}` Total PRESSURE `=0.5+2x=0.84 i.e., x=0.17` `K_(p)=P_(NH_(3)).P_(H_(2)S)=(0.67).(0.17)=0.1139`