Question

N2 is non-reactive, however, if you can get it to react with H2, it does so in a 1:3 mole ratio (N2:H2) and releases 92.0 kJ of thermal energy. That means which if these statements are true?

A. This reaction is exothermic.
B. This reaction has a negative enthalpy of reaction.
C. All of the above are true.
D. This reaction has a negative enthalpy of reaction.

Answer 1

Answer:

C. all above is true.

Explanation:

Energy releasing reactions are exothermic. Total energy of products ( $ N_2 H_2$  ) is less than the total energy of reactants ( $ H_2 + N_2$ ) gives negative enthalpy change.

hint: prefix exo- means "outside, external".