Question

using a diagram explain how copper metal can be refined label the important arrangemet in the experiment set up

Answer 1

1)The electrolytic tank containing acidified copper sulphate solution as electrolyte.
2)A thick block of impure copper metal is made anode.
3)A thin strip of pure copper metal is made cathode.

On passing electric current,impure copper from the anode dissolves and goes into copper sulphate solution and pure copper from copper sulphate deposits on cathode.Thus pure copper metal is produced on the cathode.The soluble impurities go into the solution whereas insoluble impurities collect below the anode as anode mud.
At cathode

Cu*(2+) + 2 e*(–) —> Cu

At anode
Cu  —–> Cu*(2+) + 2 e*(–)