Question
Displacement Reaction
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Answer
The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by formation of its own ions, is called displacement reaction.
In the above equation when zinc dust is added to blue coloured copper sulphate solution, a colourless solution of zinc sulphate is formed and copper is deposited on zinc. The $Zn^{2+}$ ions formed from $Zn$ atom take the place of $Cu^{2+}$ ions in copper sulphate, and $Cu$ atoms formed from $Cu^{2+}$ ion come out. It means that $Zn$ displaces $Cu$ from $CuSO_{4.}$
In the above equation when zinc dust is added to blue coloured copper sulphate solution, a colourless solution of zinc sulphate is formed and copper is deposited on zinc. The $Zn^{2+}$ ions formed from $Zn$ atom take the place of $Cu^{2+}$ ions in copper sulphate, and $Cu$ atoms formed from $Cu^{2+}$ ion come out. It means that $Zn$ displaces $Cu$ from $CuSO_{4.}$
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