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What is the Difference Between Displacement and Double Displacement Reactions? Write Equations for These Reactions. - CBSE Class 10 - Science

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Question

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

Solution 1

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

For Example: CuSo4 (aq) + Zn (s) → ZnSO4 (aq) + Cu (s)


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

For Example: Na2SO4 (aq) + BaCl2 (aq) → BaSO4 (s) + 2NaCl (aq)

Solution 2

  • A displacement reaction is the one when a more reactive substance displaces a less reactive one from its salt solution whereas a double displacement reaction is the one where a mutual exchange of ions happens between two compounds.
  • In a displacement reaction only a single displacement takes place whereas in the double displacement reaction, as the name suggests two displacement takes place between the molecules.
  • Example:
  • Displacement reaction

    Mg+2HClMgCl2+H2

  • Double displacement reaction

    2KBr+BaI22KI+BaBr2

Solution 3

Displacement Reaction Double Displacement Reaction
Displacement reaction is a chemical reaction in which displacement of a metal from its solution takes place by the other metal that is more reactive than the metal being displaced. Double displacement reaction is a chemical reaction in which exchange of ions between both the reactants takes place.
Example:
Zn + CuSO4 → ZnSO4 + Cu
Here, Zinc (Zn), which is more reactive than Cu, displaces copper from its solution.
Example:
Na2SO+ BaCl→ BaSO4 + 2NaCl
Here, both Na2SO4 and BaCl2 exchange their ions.
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APPEARS IN

 NCERT Solution for Science Textbook for Class 10 (2019 to Current)
Chapter 1: Chemical Reactions and Equations
Q: 13 | Page no. 16
 Lakhmir Singh Solution for Chemistry for Class 10 (2019 Exam) (2018 to Current)
Chapter 1: Chemical Reactions and Equations
Q: 33.1 | Page no. 47
Solution What is the Difference Between Displacement and Double Displacement Reactions? Write Equations for These Reactions. Concept: Chemical Reactions - Types of Chemical Reactions - Displacement.
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