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The Equilibrium Constant (Kc)for the Decomposition of Ammonium Hydrogen Sulfide,NH4HS(s)

Question 15

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The equilibrium constant (Kc) for the decomposition of ammonium hydrogen sulfide,NH4HS(s) The equilibrium constant (K<sub>c</sub>) for the decomposition of ammonium hydrogen sulfide,NH<sub>4</sub>HS(s) NH<sub>3</sub>(g) + H<sub>2</sub>S(g) ,is 1.8 × 10<sup>-4</sup> at 25 °C.If excess NH<sub>4</sub>HS(s) is allowed to equilibrate at 25 °C,what is the equilibrium concentration of NH<sub>3</sub>? A) 3.2 × 10<sup>-8</sup> M B) 9.0 × 10<sup>-5</sup> M C) 1.8 × 10<sup>-4</sup> M D) 6.7 × 10<sup>-3</sup> M E) 1.3 × 10<sup>-2</sup> M NH3(g) + H2S(g) ,is 1.8 × 10-4 at 25 °C.If excess NH4HS(s) is allowed to equilibrate at 25 °C,what is the equilibrium concentration of NH3?


A) 3.2 × 10-8 M
B) 9.0 × 10-5 M
C) 1.8 × 10-4 M
D) 6.7 × 10-3 M
E) 1.3 × 10-2 M

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