Question

question 7 · 1 point
is the following reaction endothermic or exothermic?
2 al(s) + fe₂o₃(s) → 2 fe(s) + al₂o₃(s) + energy (heat)
select the correct answer below:
endothermic
exothermic
neither endothermic nor exothermic
both endothermic and exothermic

Explanation:

Step1: Recall reaction - heat relationship

In a chemical reaction, if heat is released as a product (appears on the right - hand side of the reaction equation), it is exothermic.

Step2: Analyze given reaction

The reaction $2Al(s)+Fe_2O_3(s)\longrightarrow 2Fe(s)+Al_2O_3(s)+ \text{energy (heat)}$ has heat on the product side. So, it is an exothermic reaction.

Answer:

B. exothermic