Answer:
The reaction is exothermic
Step-by-step explanation:
An exothermic reaction is a reaction in which heat is liberated or released to the surrounding. In this kind of reaction ( i.e exothermic), the change in enthalpy, ΔH, is negative and less than zero.
Since student got an enthalpy change, ΔH that is negative ( ΔH = - 13 kcal), the reaction is an exothermic reaction.
