At 22 °C, K_p = 0

question 55

Multiple Choice

At 22 °C, K_p = 0.070 for the equilibrium:
NH₄HS (s) NH₃ (g) + H₂S (g)
A sample of solid NH₄HS is placed in a closed vessel and allowed to equilibrate. Calculate the equilibrium partial pressure (atm) of ammonia, assuming that some solid NH₄HS remains.

• A) 0.070
• B) 0.26
• C) 3.8
• D) 0.52
• E) 4.9 × 10^{- 3}

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