Question

Define a reversible reaction. Give an example.

Answer 1

• Reversible reactions : A reversible reaction is a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously.
• Reversible reactions take place in both directions (forward and backward).
• In reversible reactions, equilibrium is established.
• Examples:

${\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)\rightleftharpoons 2{\mathrm{NH}}_3\left(\mathrm{g}\right)$

${\mathrm{PCl}}_5\left(\mathrm{g}\right)\rightleftharpoons {\mathrm{PCl}}_3\left(\mathrm{g}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)$