Question

What do you mean by endothermic reaction?

Answer 1

• The reaction which proceeds with the absorption of heat energy is called an endothermic reaction.
• This reaction cannot be sustained without supply of energy from an external source.
• $\mathrm{A}+\mathrm{B}\to \mathrm{C}-\mathrm{Energy}$

or

• $\mathrm{A}+\mathrm{B}+\mathrm{Heat}\to \mathrm{C}$
• For example, Formation of Carbon Disulphide

$\mathrm{C}\left(\mathrm{s}\right)+2\mathrm{S}\left(\mathrm{s}\right)+\mathrm{Heat}\to {\mathrm{CS}}_2\left(\mathrm{g}\right)$