Question

Leena wants to deposit silver on a copper spoon. She took silv solution in a beaker and set up a simple circuit for a) Which terminal of the battery should the spoon be connected to ? b) What material should the other electrode made up of ?

Answer 1

a) The spoon should be connected to the cathode.

At the cathode always the metals will be deposited.Hence copper will be deposited on spoon if it is kept at cathode only.

Reaction at cathode:-   Ag2+   +   2e----------------------->Ag

b)The other electrode should be made of active silver electrode

Reaction at anode:-      Ag-------------------------->Ag2+       + 2e

The silver ions will have to be continuously replaced.

Hope it helps you.