Question

On the basis of following equations, the heat of dimerization of NO₂ will be : 

(i) N₂ + 2O₂ → 2NO₂; ΔH = 67.9 kJ 

(ii) N₂ + 2O₂ → N₂O₄; ΔH = 9.3 kJ 

(a) +77.2 kJ 

(b) -77.2 kJ 

(c) -58.6 kJ 

(d) +58.6 kJ

Answer 1

Correct option is : (c) -58.6 kJ