Solid Ammonium Hydrogen Sulfide Is Introduced into a 2

question 72

Multiple Choice

Solid ammonium hydrogen sulfide is introduced into a 2.00-L flask,and the flask is sealed.If this solid decomposes according to the equation NH₄HS(s) NH₃(g) + H₂S(g) ,K_P = 0.108 at 25°C,what is the minimum mass of ammonium hydrogen sulfide that must be present in the flask initially if equilibrium is to be established at 25°C? (R = 0.08206 L • atm/K • mol)

• A)0.917 g
• B)1.37 g
• C)2.74 g
• D)0.581 g
• E)0.452 g

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