Answer:
Exothermic
Explanation:
From the perspective of thermodynamics, chemical reactions can be broadly
classified as endothermic and exothermic reactions.
Endothermic reactions are accompanied by the absorption of heat and have a negative value for the reaction enthalpy i.e. ΔH is negative. In contrast, exothermic reactions are accompanied by the release of heat and have a positive value for the reaction enthalpy i.e. ΔH is positive.
The given reaction is:
[tex]N2(g) + 3H2(g)---- 2NH3(g) + 100.4 kJ[/tex]
Based on the above reaction, production of NH3 is accompanied by the release of 100.4 kJ of heat, hence this is an exothermic reaction.
