Question

question
this is the reaction that happens inside of a hot pack found in emergency kits: cacl₂(s) → cacl₂(aq)
is the reaction endothermic or exothermic?
select the correct answer below:
endothermic
exothermic
neither endothermic nor exothermic
both endothermic and exothermic

Explanation:

Step1: Recall hot - pack function

Hot packs generate heat.

Step2: Define reaction types

Exothermic reactions release heat.

Step3: Determine reaction type

Since hot packs release heat due to the reaction of $CaCl_2(s)\to CaCl_2(aq)$, it is exothermic.

Answer:

exothermic