Question

Neutralization and precipitation reaction are the double displacement reactions?

Answer 1

Double Displacement Reaction :-

1. It is actually a chemical reaction in which the elements are exchanged between the two compounds.
2. Basically, in this reaction the cations and anions of the two compounds will switch the two places.
3. Example of Displacement : $\underset{\mathrm{Barium}\mathrm{chloride}}{{\mathrm{BaCl}}_{2\left(\mathrm{aq}\right)}}+\underset{\mathrm{Sodium}\mathrm{sulphate}}{{\mathrm{Na}}_2{\mathrm{SO}}_{4\left(\mathrm{aq}\right)}}\to \underset{\mathrm{Barium}\mathrm{Sulphate}}{{\mathrm{BaSO}}_{4\left(\mathrm{s}\right)}}\downarrow +\underset{\mathrm{Sodium}\mathrm{chloride}}{2\mathrm{NaCl}\left(\mathrm{aq}\right)}$
4. A Neutralization reaction is actually a chemical reaction which is between the acid and base for the production of salt and water is also a double displacement reaction because here displacement will take place in the two compounds, As the reaction between the vinegar and the baking soda is a neutralization as well as a double displacement reaction which is also used for the making of volcanoes model for showing the eruption.
5. Example of neutralization reaction : $\underset{\mathrm{Sodium}\mathrm{hydroxide}}{{\mathrm{NaOH}}_{\left(\mathrm{aq}\right)}}+\underset{\mathrm{Hydrochloric}\mathrm{acid}}{{\mathrm{HCl}}_{\left(\mathrm{aq}\right)}}\to \underset{\mathrm{Sodium}\mathrm{chloride}}{{\mathrm{NaCl}}_{\left(\mathrm{aq}\right)}}+\underset{\mathrm{Water}}{{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{l}\right)}}$
6. A Precipitation reaction is also a chemical reaction which will involve double displacement reaction for the production of the solid form residue which is known as precipitate, as in this the displacement of the ions will take place in the two compounds .
7. This reaction will also take place when the two or more solutions having the different salts are combined and this will result in the formation of the insoluble salts.
8. Example of precipitation reaction : $\underset{\mathrm{Silver}}{2{\mathrm{Ag}}_{\left(\mathrm{s}\right)}}+\underset{\mathrm{Hydrochloric}\mathrm{acid}}{2{\mathrm{HCl}}_{\left(\mathrm{aq}\right)}}\to \underset{\mathrm{Silver}\mathrm{chloride}}{2{\mathrm{AgCl}}_{\left(\mathrm{s}\right)}\downarrow }+\underset{\mathrm{Hydrogen}\mathrm{gas}}{{\mathrm{H}}_{2\left(\mathrm{g}\right)}}$.

Therefore, Neutralization and Precipitation reaction are the double displacement reactions.