describe an experiment for the electroplating of an iron object with copper
Answers
Answer:
Take a copper sulphate solution in a beaker . Connect an iron nail that to be electroplated to the negative terminal of a battery . Connect a copper strip to the positive terminal of the battery . Dip the copper strip and object to b electroplated in the beaker containing copper sulphate solution .Leave the set up for half an hour . U will c a deposit of reddish broun coating on the object . When electricity is passed through the solution , copper ions move towards the cathode and get reduced to copper metal . This metal gets electroplated on the object .
Answer:
Electroplating is the process of depositing a layer of a metal on a metallic or a nonmetallic electrode by electrolysis in an electrolytic cell.
Let us take an iron spoon which is to be electroplated with copper. For this, we take a copper plate and an iron spoon as electrodes and copper sulphate (CuSO
4
) is taken as an electrolyte. The electrodes are connected through an external circuit as shown in figure. On passing current through the electrolyte, it is decomposed into Cu
2+
and (SO
4
)
2−
ions.
As Cu
2+
ion is positively charged, it moves towards the negative terminal i.e. iron spoon and gets deposited on it. Thus, iron spoon gets plated with copper. There is no scarcity of Cu atoms because the copper atoms go into the solution from the positive terminal i.e. copper plate. This process called electroplating continues until the iron spoon gets coated with copper.