Question

________ is absorbed in an endothermic reaction. (Temperature/ Heat)

Answer 1

Endothermic and exothermic reaction:
The reaction in which heat is absorbed is called an endothermic reaction.

The reaction in which heat is liberated is called an exothermic reaction.

Example of an endothermic reaction:

The heat energy is taken by the system to carry out a reaction is endothermic in nature. It does not relate to temperature.

An example of an endothermic reaction is given below.

$$\begin{gathered} {\mathrm{N}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)+\mathrm{heat}\to 2\mathrm{NO}\left(\mathrm{g}\right) \\ \left(\mathrm{Nitrogen}\right)\left(\mathrm{Oxygen}\right)\left(\mathrm{Nitric}\mathrm{oxide}\right) \end{gathered}$$

Therefore, heat is absorbed in an endothermic reaction.