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Relation between displacement reaction and electroplating

Dear Student,
 

The metal to be electroplated is made the cathode, while the anode is the other metal which has to be deposited on this metal. A more electropositive (or more reactive) metal (e.g. Zn or Mg) is made the anode and the iron, the cathode.

Displacement reaction :

Displacement reactions are those reactions in which more reactive element replaces another element from its compound. 
 
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Displacement is type of distance but it was shortest distance between initial and final point. Electroplating means cover a thing by thin layer of iron with the help of electric current .
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Displacement reaction is occured when a metal displaces another metal from its compound.
For ex-in the compound copper sulphate if iron is added the iron displaces the copper and resultant are iron sulphate and copper.
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