Question

During the electrolysis of acidified copper sulphate solution with platinum electrodes the colour of the electrolyte: (a) becomes darker
(b) fades away
(c) first becomes dark then fades
away
(d) remains blue​

Answer 1

Answer:

During electrolysis of acidified sulphte solution with platinum electrodes, fades away the colour of the electrolyte.

Explanation:

• In the chemical reaction taking place during electrolysis of copper sulphate solution , the copper ion (Cu+2) is discharged from the positive electrode called anode.

• At anode, oxidation reaction takes place. Discharged copper ions from anode are attracted towards the negative electrode known as cathode. At cathode, reduction reactions take place. Copper ions are deposited as copper at cathode . Consequently it loses its blue colour and fades away.  

So , the correct option is B.