Ammonium hydrogen sulfide dissociates as follows NH_4HS(s) hArr H_2S(g) +NH_3(g) if solid NH_4 HS is placed in an evacuated flask at a certain temperature, it will dissociate until the total gas pressure is 500 torr. Calculate the following. (a) Equilibrium constant for the dissociation reaction (b) if the additional NH_3 is introduced into the equilibrium mixture without change in temperature until the partial pressure of ammonia is 700 torr. (i) Whatis the partial pressure of H_2O under these conditions (ii) What is the total pressure in the flask ?

Ammonium hydrogen sulfide dissociates as follows NH_4HS(s) hArr H_2S(

1.	Ammonium hydrogen sulfide dissociates as follows NH_4HS(s) hArr H_2S(g) +NH_3(g) if solid NH_4 HS is placed in an evacuated flask at a certain temperature, it will dissociate until the total gas pressure is 500 torr. Calculate the following. (a) Equilibrium constant for the dissociation reaction (b) if the additional NH_3 is introduced into the equilibrium mixture without change in temperature until the partial pressure of ammonia is 700 torr. (i) Whatis the partial pressure of H_2O under these conditions (ii) What is the total pressure in the flask ?
Answer» ANSWER :0.329 ATM (a) `0.108 atm^2` (b) 0.117 atm (ii) 789 TORR