Question

Complete the table given below:

Process	Nature of anode	Nature of cathode	Ions present in the electrolyte	Ions discharge at Cathode Anode
Electroplating of a copper sheet with nickel
Electroplating of an iron rod with silver
Electrorefining of silver
Extraction of potassium from KCI
Extraction of aluminium from Al2O3

Answer 1

Step 1 Definition of Anode and Cathode

Anode: Anode is the flow of current which is defined polarized electrode where electric current travels into an electrical device.

Cathode: Cathode is an electrode that is defined current that leaves an electrolytic cell and polarized electric device.

Step 2 Complete the table

Process	Nature of anode	Nature of cathode	Ions present in the electrolyte	Ions discharge at Cathode Anode
Electroplating of a copper sheet with nickel	Nickel	Copper	${\mathrm{Cu}}^{2+},{\mathrm{SO}}_4^{2-},{\mathrm{H}}^{+},{\mathrm{OH}}^{-}$	${\mathrm{Cu}}^{2+}$	Ni anode dissolves forming Ni2+ ions
Electroplating of an iron rod with silver	Silver	Iron	${\mathrm{Ag}}^{+},{\mathrm{Na}}^{*},{\mathrm{CN}}^{-}$	${\mathrm{Ag}}^{+}$	Ag anode dissolves forming Ag+ ions
Electrorefining of silver	Impure Silver	Pure Silver	${\mathrm{Ag}}^{+},{\mathrm{NO}}_3={\mathrm{H}}^{+},{\mathrm{OH}}^{-}$	${\mathrm{Ag}}^{+}$	Ag anode dissolves forming Ag+ ions
Extraction of potassium from KCI	Graphite	Iron	$K^{+},C{l}^{-}$	$K^{+}$	$C{l}^{-}$
Extraction of aluminium from Al2O3	Carbon	Carbon	$A{l}^{3+},O^{2-}$	$A{l}^{3+}$	$O^{2-}$