Question

Define endothermic reactions.

Answer 1

• Endothermic reaction: Endothermic reactions are those reactions in which heat is absorbed by the system from the surroundings or heat is supplied.
• Generally, an endothermic reaction leads to a decrease in the temperature of the surrounding.
• Example: When nitrogen and oxygen are heated to a very high temperature to form nitrogen monoxide, a lot of heat is absorbed.

$\underset{\mathrm{Nitrogen}}{{\mathrm{N}}_2}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2}+\mathrm{Heat}\to \underset{\mathrm{Nitrogen}\mathrm{monoxide}}{2\mathrm{NO}}$