Chemistry
Grade-10
Easy

Question

Which of the reaction is not possible?

  1. Zn +CuSO4 rightwards arrow ZnSO4 + Cu
  2. 2Ag+ CuSO4 rightwards arrowAgSO4 + Cu
  3. Mg + CuSO4 rightwards arrowMgSO4+ Cu
  4. 2Na+ CuSO4 rightwards arrowNaSO4+ Cu

hintHint:

2Ag + CuSO4 ---> AgSO4 + Cu

The correct answer is: 2Ag+ CuSO4 rightwards arrowAgSO4 + Cu


    When silver Ag metal is added to copper sulphate CuSO4 solution, no reaction takes place as silver is less reactive than that of copper and cannot displace copper from its solution. Hence, when a piece of silver metal is added to copper sulphate solution there will be no reaction.

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