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Which of the following reactions will not occur? Why not?
(a) Zinc Sulphate + Copper âž Copper Sulphate + Zinc
(b) Copper Sulphate + Iron âž Iron Sulphate + Copper
(a) Zinc sulphate + Copper ➝ Copper Sulphate + Zinc
This reaction will not occur as zinc is more reactive than copper. Copper will not be able to replace zinc from zinc sulphate solution. A more reactive metal can replace a less reactive metal, but a less reactive one cannot replace a more reactive metal.
(b) Copper Sulphate + Iron ➝ Iron Sulphate + Copper
This reaction will take place as Iron is more reactive than copper. In a solution of copper sulphate, iron will react and will be able to displace copper from its solution. In this reaction, iron will change into iron sulphate and copper metal will be produced.
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- Uses: Iron, Copper, Aluminium, Zinc
- Can copper displace iron from iron sulphate solution? Give reason for your answer.
- What change in the colour of iron nails and copper sulphate solution you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes.
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- Write the balanced chemical equations for the following reactions :(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water(b) Zinc + Silver nitrate → Zinc nitrate + Silver(c) Aluminium + Copper chloride → Aluminium chloride + Copper(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride
- We can show that iron is more reactive than copper :by preparing copper sulphate solution and dipping iron strip in itby dipping both the strips in water for some timeby preparing iron sulphate solution and dipping copper strip in itby heating both iron and copper strips
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