revole thank you when solid NH4HS is placed in a container , where itdecompasses

Question

revole thank you when solid NH4HS is placed in a container , where itdecompasses to form NH3 and H2S NH4HS(s)---------------NH3gaz+H2Sgaz the total gaz pressure is measured as 0.659, ifNH3 is added to bring the total pressure to 1.250atm , whatis the new partial pressure of H2S? Temperature remainsconstant revole thank you when solid NH4HS is placed in a container , where itdecompasses to form NH3 and H2S NH4HS(s)---------------NH3gaz+H2Sgaz the total gaz pressure is measured as 0.659, ifNH3 is added to bring the total pressure to 1.250atm , whatis the new partial pressure of H2S? Temperature remainsconstant

Explanation / Answer

initial NH3 = 0.329 atm initial H2S = 0.329 1.250 - 0.329 = 0.921 atm NH3              NH4HS =>   NH3    +       H2S equil                         0.921 - x 0.329 - x (0.921 - x )*(0.329 - x) = K = (0.329)*(0.329) x2 - (0.329 + 0.921)*x + (0.329*0.921) = 0.329^2 x - 1.25 x + 0.195 = 0 x = 0.183 HS2 = 0.329 - 0.183 = 0.146 atm

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