Question

In an endothermic reaction the heat is __________. ( absorbed/ liberated)

Answer 1

Endothermic and exothermic reaction:
The endothermic reaction is in which heat is absorbed, whereas an exothermic reaction is a reaction in which heat is liberated by the system undergoing the reaction.

Example of an endothermic reaction:

An example of an endothermic reaction is the formation of nitric oxide (NO).

The reaction is given below.

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

Hence, in an endothermic reaction, the heat is absorbed.