JEE Main Chemistry question
For the reaction 2NO₂(g) ⇌ 2NO(g) + O₂(g), Kc = 1.8×10⁻⁶ at 185°C. At 185°C, the Kc for NO(g) + ½O₂(g) ⇌ NO₂(g) is:
Answer: (B)
Solution
Half+reverse of given: Kc' = 1/√(1.8×10⁻⁶) = 745 ≈ 7.5×10².
For the reaction 2NO₂(g) ⇌ 2NO(g) + O₂(g), Kc = 1.8×10⁻⁶ at 185°C. At 185°C, the Kc for NO(g) + ½O₂(g) ⇌ NO₂(g) is:
Half+reverse of given: Kc' = 1/√(1.8×10⁻⁶) = 745 ≈ 7.5×10².