Question

1. Write the balanced equation for the production of brown nitrogen dioxide (NO₂) gas from nitrogen and oxygen gases. Calculate the enthalpy of the reaction if the process occurs in the sequence of reactions given below:

• N_{2 (g)} + O_{2 (g)} ---> 2NO _(g)           ∆H = 180 kJ
• 2NO_{2 (g)} ---> 2NO _(g) + O_{2 (g)}       ∆H = 112 kJ

Answer 1

180-112= 68kJ