Question

What is the difference between displacement and double displacement reactions? Write the equations for these reactions.​

Answer 1

Answer:  Hello

Displacement reaction: A displacement reaction occurs when a more responsive element replaces a less reactive element from a molecule.

& Double displacement reactions are chemical reactions in which two compounds react and the positive ions  which are called--> (cation) and negative ions  that are called -->(anion) of the two reactants transfer places, resulting in the formation of two new compounds or products.

Explanation:

Answer 2

Displacement reaction:

• In displacement reaction, a more reactive element replaces a less reactive element from a compound.

• In displacement reaction only a single displacement takes place.

• A Displacement reaction is a chemical reaction in which displacement of metal from its solution takes place by the other metal is more reactive than the metal being displaced.

                              Zn (s) +CuSO4 (aq)→ ZnSO4 (aq) +Cu (s)

• Here, zinc(Zn), which is more reactive than Cu, displaces copper from its solution.

Double displacement reaction:

• In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds.

• A double displacement reaction is one where a mutual exchange of ions happens between two compounds.

• A double displacement reaction, as the name suggests two displacement takes place between the molecules.

                         Na2SO4 (aq) + BaCl2 (aq) → BaSO4 (s)+2NaCl (aq)

• Here, both Na2SO4 and BaCl2 exchange their ions.