JEE Main2005ChemistryChemical EquilibriumActual
An amount of solid NH ₄ HS is placed in a flask already containing ammonia gas at a certain temperature and 0.50 ~atm . Pressure. Ammonium hydrogen sulphide decomposes to yield NH ₃ and H ₂ ~S gases in the flask. When the decomposition reaction reaches equilibrium, the total pressure in the flask rises to 0.84 ~atm . The equilibrium constant for NH ₄ HS decomposition at this temperature is
Options
- A0.30
- B0.18
- C0.17
- D0.11
Correct answer
D. 0.11
Step-by-step solution
Total pressure =0.5+2 x =0.84 i.e., x =0.17 ~K _ p = p _ NH ₃ p _ H ₂ ~s =(0.67) .(0.17) =0.1139 .