Would the reaction A + 2B + energy --> AB₂ be an endothermic or exothermic reaction?

Question

endothermic

exothermic

The value of the energy is needed to determine if energy is released or absorbed in this reaction.

Answer 1

Without knowing the value of the energy, it is not possible to determine whether the reaction is endothermic or exothermic. The energy term in the chemical equation indicates that energy is either absorbed or released during the reaction. If the energy term is positive, the reaction is endothermic, meaning that energy is absorbed. If the energy term is negative, the reaction is exothermic, meaning that energy is released.