Q. The following equilibrium constants are given: N₂ + 3H₂ ⇌ 2NH₃ ; K₁ N₂ + O₂ ⇌ 2NO ; K₂ H₂ + ½O₂ ⇌ H₂O ; K₃ The equilibrium constant for the oxidation of NH₃ by oxygen to give NO is
A) K₂K₃²/K₁
B) K₂²K₃/K₁
C) K₁K₂/K₃
D) K₂K₃³/K₁
Explanation
[Solution from source] Target: 2NH₃ + (5/2)O₂ ⇌ 2NO + 3H₂O = (reverse of eq. 1) + (eq. 2) + 3 × (eq. 3). So K = K₂K₃³/K₁. Using K₃ only once ignores that three water molecules form. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.