4. Given the following data:
2O3 (g) 3O2 (g) H1 = 􀀀427 kJ
O2 (g) 2O(g) H2 = 495 kJ
NO(g) + O3 (g) NO2 (g) + O2 (g) H3 = 􀀀199 kJ
a) Draw a Hess’s Law Cycle (energy cycle) using the above reactions for the
following reaction:
NO(g) + O(g) NO2 (g) H4
[Hint: you will need to add one mole of O2 to both reactants and products.]
(2 marks)
b) Express H4 in terms of H1, H2 and H3.
(2 marks)
c) Hence calculate H4 for the reaction.

Question

4. Given the following data:
2O3 (g) 3O2 (g) H1 = 􀀀427 kJ
O2 (g) 2O(g) H2 = 495 kJ
NO(g) + O3 (g) NO2 (g) + O2 (g) H3 = 􀀀199 kJ
a) Draw a Hess’s Law Cycle (energy cycle) using the above reactions for the
following reaction:
NO(g) + O(g) NO2 (g) H4
[Hint: you will need to add one mole of O2 to both reactants and products.]
(2 marks)
b) Express H4 in terms of H1, H2 and H3.
(2 marks)
c) Hence calculate H4 for the reaction.

abb0t · Answer

This is so much. 
But ok, can you explain what exactly you do not understand, and we can start from there.