Respuesta :
The phase change from gas to ice NH₃(g) → NH₃(0), shows an exothermic process.
What is exothermic reaction?
Exothermic reactions are those reaction in which heat is released during the overall course of the reaction.
- CO₂(s) → CO₂(g), this change is also known as sublimation and this is a endothermic reaction because heat is absorbed for the breaking of bonds of solid.
- Cu(s) → Cu(l), this change is also known as fusion and this is a endothermic reaction because heat is absorbed for the breaking of bonds of solid.
- NH₃(g) → NH₃(0), this change defines the freezing process and this is a exothermic reaction because heat is released to lower the temperature.
- Hg(l) → Hg(g), this change is also known as vaporization and this is a endothermic reaction because heat is absorbed for the breaking of bonds of liquid.
So, NH₃(g) → NH₃(0) is an exothermic reaction.
To know more about exothermic reaction, visit the below link:
https://brainly.com/question/2924714
