STANDARDChemistry-Chemical Equilibrium
STANDARD Chemistry Equilibrium Constant Calculations MCQ Question
Type: MCQ-numerical-Medium
Calculate Kₚ for the equilibrium, NH₄HS(s) ⇌ NH₃(g) + H₂S(g). If the total pressure inside the reaction vessel is 1.12 atm at 105°C.
A
0.56
B
1.25
C
0.31
D
6.63
Correct Answer
Option C
Detailed Explanation
For the equilibrium NH₄HS(s) ⇌ NH₃(g) + H₂S(g), the total gaseous moles at equilibrium is 2x. The partial pressure of each gas is x/2 times the total pressure. Therefore, Kₚ = (1.12/2)² = 0.3136.
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