Which of the following reactions is an example of double displacement reaction?

Correct option is B

• Na₂SO₄ and BaCl₂ are ionic compounds that dissociate into their respective ions in aqueous solution.

• BaSO₄ is insoluble in water and precipitates out, while NaCl remains dissolved in the solution.

• The exchange of ions between Na₂SO₄ and BaCl₂ is the characteristic feature of a double displacement reaction.

Information Booster:

• Double displacement reactions involve the exchange of ions between two reactants, forming precipitates, water, or gases.

• These reactions are often used in analytical chemistry to detect the presence of certain ions in solutions.

• BaSO₄ is one of the most insoluble salts, which is why it precipitates from the aqueous solution.

Additional Information:

• Fe(s) + CuSO₄(aq) → FeSO₄(aq) + Cu(s): This is a single displacement reaction (redox reaction), where iron displaces copper from copper sulfate.

• Pb(s) + CuCl₂(aq) → PbCl₂(aq) + Cu(s): This is another example of a single displacement reaction, where lead displaces copper from copper chloride.

• Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s): This is a single displacement reaction (redox), where zinc displaces copper from copper sulfate.