K c for the decomposition of ammonium hydrogen sulfide is 1.8 10 4 at 25C. (a)

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Kc for the decomposition of ammonium hydrogen sulfide is 1.8 × 10−4 at 25°C.NH4HS(s)  NH3(g) + HS(g)

(a) When the pure salt decomposes in a flask, what are the equilibrium concentrations of NH3 and H2S?
(b) If NH4HS is placed in a flask already containing 0.020 mol/L of NH3 and then the system is allowed to come to equilibrium, what are the equilibrium concentrations of NH3 and H2S?

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Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

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