Question

What is reversible reaction?

Answer 1

1. A reversible reaction is a chemical reaction in which the reactants react to form the products and simultaneously the products again form the reactants.
2. In such a reaction the reactants and products continuously react with each other both in forward and backward reactions.
3. In simple words the reactant bonds are broken down by the collision of molecules and further this broken bond generate enough energy to make new molecules of product.
4. The general form of reversible reaction is depicted as follows: $\mathrm{X}+\mathrm{Y}\rightleftharpoons \mathrm{C}+\mathrm{D}$; where $\mathrm{X}\mathrm{and}\mathrm{Y}$ is the reactant molecules and $\mathrm{C}+\mathrm{D}$is the products molecules.
5. The double arrow$\left(\rightleftharpoons \right)$ sign indicates that the reaction is reversible in nature.
6. Example: Formation of Hydrogen Chloride$\left(\mathrm{HCl}\right)$ and Ammonia$\left({\mathrm{NH}}_3\right)$ through Ammonium chloride$\left({\mathrm{NH}}_4\mathrm{Cl}\right)$.
7. The reaction will occurs as follows:
   ${\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{s}\right)\rightleftharpoons {\mathrm{NH}}_3\left(\mathrm{g}\right)+\mathrm{HCl}\left(\mathrm{g}\right)$