Complete the table to show which products are formed at each of the electrodes when each substance is split during electrolysis.
Substance
Formula
Ions Contained
Product at negative electrode
Product at positive electrode
Calcium Bromide
Iron Oxide
CaBr2
Fe2O3
Ca2+
Fe3+
BrO2-
Calcium (Ca)
Iron (Fe)
Bromine (Br)
Oxygen (O)
1.Sodium Iodide
NaI
NiCl2
Na+
Ni2+
I-
NaCl
H2 O
Al2O3
CuSO4
KCl
AgNO3
ZnSO4
NaBr
Na+
2.Nickel Chloride
3.Sodium Chloride
4.Water
5.Aluminium Oxide
6.Copper Sulphate
7.Potassium Chloride
8.Silver Nitrate
9.Zinc Sulphate
10.Sodium Bromide
O2Al3+
SO42NO3SO42-
Helpful Hints
1. Useful Ions to know:
H+
K+
Br-
Cl-
O2-
Cu2+
Ag+
Zn+
2. If SO2-or NO3- are produced, then the product formed at the positive electrode will be oxygen (O2)

Use the table to predict what will form at which electrodes if copper chloride (CuCl2) is split using electrolysis