Question

what is double displacement reaction with example​

Answer 1

$\underline{ \purple { \sf \huge Double \: displacement \: reaction :- }}$

Those reactions in which two compounds react by an exchange of ions to form two new compounds are called Double displacement reaction.

The double displacement reaction usually occurs in solution and one of the products, being insoluble, precipitates out.

$\underline{ \blue { \sf \huge For \: example :-}}$

When silver nitrate solution is added to sodium chloride solution, then a white precipitate of silver chloride is formed along with sodium nitrate solution.

AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃ (aq)

AgNO₃ ↦Silver nitrate

NaCl ↦ Sodium chloride

AgCl ↦Silver chloride (White precipitate)

NaNO₃ ↦ Sodium nitrate

In this double displacement reaction, two compounds silver nitrate and sodium chloride, react to form two new compounds, silver chloride nitrate. An exchange of ions takes place in this reaction. Silver chloride is formed as an insoluble white solid.

Answer 2

$\green{ \fcolorbox{grey}{White}{ \checkmark \: \textsf{Verified \: answer}}}$

Double displacement reactions are reactions where the cations and anions in the reactants switch partners to form products.

AB + CD → AD + CB