JEE Main Chemistry question
For the gaseous phase reaction, 2NO ⇌ N₂ + O₂, ΔH° = −43.5 kcal, which statement is correct for N₂(g) + O₂(g) ⇌ 2NO(g)?
Answer: (C)
Solution
N₂+O₂⇌2NO is the reverse of the given exothermic reaction, hence endothermic (ΔH=+43.5 kcal); K increases with rising temperature.