Question

What is the difference between single displacement and double displacement reactions with the help of suitable examples to help solve the same​

Answer 1

Answer:A single-replacement reaction replaces one element for another in a compound. The periodic table or an activity series can help predict whether single-replacement reactions occur. A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.

Answer 2

Answer:

Single Displacement reaction :

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

2) In a displacement reaction, one displacement takes place.

A + BX → AX + B

3) Change in color takes place with no precipitate forms.

4) Metals react with the salt solution of another metal.

5) Examples:

• 2KI + Cl2 → 2KCl + I2 is a displacement reaction.

• CuSO4 + Zn → ZnSO4 + Cu is also a displacement

Double Displacement reactions :

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

2) In a double displacement reaction, two displacements take place to complete the reaction.

AB + CD → AC + BD

3) Precipitate is formed.

4) Salt solutions of two different metals react with each other.

5) Examples:

• Na2SO4 + BaCl2 → BaSO4 + 2NaCl is a double displacement reaction.

• 2KBr + BaCl2 → 2KCl + BaBr2 is also a double displacement reaction.

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