# Problem: Consider the reaction of N2O5 at 25°C for which the following data are relevant:2 N2O5 (g) → 4 NO2 (g) + O2 (g)Substance             ΔH°f                               S°             N 2O5                    11.29 kJ/mol             355.3 J/K mol              NO 2                     33.15 kJ/mol             239.9 J/K mol              O 2                                   ?                     204.8 J/K mol What is ΔH° for the reaction?a) 110.02 kJb) 21.86 kJc) -21.86 kJd) 155.20 kJe) -155.20 kJ

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Consider the reaction of N2O5 at 25°C for which the following data are relevant:

2 N2O(g) → 4 NO(g) + O(g)

Substance             ΔH°f                               S°

N 2O5                    11.29 kJ/mol             355.3 J/K mol

NO 2                     33.15 kJ/mol             239.9 J/K mol

O 2                                   ?                     204.8 J/K mol

What is ΔH° for the reaction?

a) 110.02 kJ

b) 21.86 kJ

c) -21.86 kJ

d) 155.20 kJ

e) -155.20 kJ

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