Which of the following describes an exothermic reaction?

A + B Imported Asset AB + heat

A + BΔ Imported Asset AB

heat + BC Imported Asset B + C

B + heat + CD Imported Asset BD + C

The answer to your question is: letter A

Explanation:

a) A + B ⇒ AB + heat It is an exothermic reaction because heat is released.

b) A + BΔ ⇒ AB It heat added to the reactants, then it is an endothermic reaction.

c) heat + BC ⇒ B + C It's an endothermic reaction because heat is added to the reactants.

d) B + heat + CD ⇒ BD + C It's and endothermic reaction because heat is added to the reactants.

The correct answer is a"

Explanation:

Hello! Let's solve this!

Exothermic reactions are those that release heat and endothermic reactions are those that consume heat.

a) A + B ⇒ AB + heat

It indicates that heat is released by what is an exothermic reaction.

b) A + BΔ ⇒ AB Heat is added to the reaction so it is endothermic

c) heat + BC ⇒ B + C

It is an endothermic reaction because heat is consumed in the reaction.

d) B + heat + CD ⇒ BD + C

It is an endothermic reaction since it consumes heat

The correct answer is a"