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 gas

Question

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

TestHub · Accepted Answer

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 .

Chemistry - Chemical Equilibrium Question with Solution | TestHub

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