Question

Brief answer:
1. What is a displacement reaction?Give example.
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Answer 1

Answer:

Those reactions in which one element takes the place of another element in a compound, are known as displacement reactions. In general, a more reactive element displaces a less reactive element from its compound.

Example: $CuSO_{4} _{(aq)}+Zn_{(s)} ----> ZnSO_{4} _{(aq)} + Cu_{(s)}$

              Copper         Zinc                   Zinc             Copper

               sulphate      (Silvery-              sulphate       (Red-brown)

               (Blue              white)               (Colourless

                 solution)                                solution)

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