If the following reaction:

Question

NO(g) + 1/2O2(g) NO2(g)
has the following enthalpy change:
H° = -56 kJ/mol
What is the enthalpy of the decomposition reaction of 2 moles of NO2?
A. 112 kJ
B. 56 kJ
C. -56 kJ
D. -112 kJ
i think the answer is d

Answer 1

I just answered your earlier post.