Question

Double displacement reaction is also known as partner exchange reaction.

• A. True
• B. False

Answer 1

The correct option is A True

• Double displacement reaction is a reaction in which the ions are exchanged between the reactants. Hence, it is called as a partner exchange reaction.

$$\begin{gathered} {\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+{\mathrm{BaCl}}_2\left(\mathrm{aq}\right)\to {\mathrm{BaSO}}_4\left(\mathrm{s}\right)+2\mathrm{NaCl}\left(\mathrm{aq}\right) \\ (\mathrm{Sodium}\mathrm{sulphate})(\mathrm{Barium}\mathrm{chloride})(\mathrm{Barium}\mathrm{sulphate})(\mathrm{Sodium}\mathrm{chloride}) \end{gathered}$$

• In the following example, Barium (Ba⁺²) ion has exchanged its partner with Sodium ion (Na⁺) and vice versa.

Therefore, the given statement is true.