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35. Calculate ΔrH° for the combustion of ammonia, 4 NH3(g) + 7 O2(g) → 4 NO2(g)...

35. Calculate ΔrH° for the combustion of ammonia,
4 NH3(g) + 7 O2(g) → 4 NO2(g) + 6 H2O( )
using standard molar enthalpies of formation.

molecule ΔfH° (kJ/mol-rxn)
NH3(g) –45.9
NO2(g) +33.1
H2O( ) –285.8
a. +30.24 kJ/mol-rxn
b. –206.9 kJ/mol-rxn
c. –298.6 kJ/mol-rxn
d. –1398.8 kJ/mol-rxn
e. –1663.6 kJ/mol-rxn

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