Question

PCI3(s) + CI2(g) > PCI5(g) + energyendothermic or exothermic

Answer 1

ANSWER

Exothermic reaction

EXPLANATION

Given that;

$\text{ PCl}_{3(s)}\text{ + Cl}_{2(g)}\text{ }\rightarrow\text{ PCl}_{5(g)}\text{ + Energy}$

Firstly, define the termed endothermic and exothermic reaction

Endothermic reaction is a type of reaction in which heat is absorbed from the surroundings

Exothermic reaction is a type of reaction in which heat is liberated to the surroundings

In the reaction above, heat energy is part of the products formed. This implies that heat was is released during the reaction.

Hence, the reaction is an exothermic reaction