Question

what is difference between displacement and double displacement reaction​

Answer 1

Answer:

In displacement reaction, one element from its salt is displaced by a more reactive element e.g. in following example, Cu is displaced by Zn from CuSO4 because Zn is more reactive. In double displacement reaction, exchange of ions takes place between two reactants to form new products.

Explanation:

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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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