Ammonium Iodide Dissociates Reversibly to Ammonia and Hydrogen Iodide

question 54

Multiple Choice

Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide. NH₄I(s) NH₃(g) + HI(g)
At 400°C, K_p = 0.215. Calculate the partial pressure of ammonia at equilibrium when a sufficient quantity of ammonium iodide is heated to 400°C.

• A) 0.103 atm
• B) 0.215 atm
• C) 0.232 atm
• D) 0.464 atm
• E) 2.00 atm

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