The balanced chemical reactions of the following are:1. Iron (IIII) and copper (II) sulfate solution
2 Fe + 3 CuSO4 = 3 Cu + Fe2(SO4)3 
 
2. Lead (II) nitrate and potassium iodide solutions 
 Pb(NO3)2 + 2 KI = 2 KNO3 + PbI2 
3. Magnesium metal ribbon and hydrochloric acid solution 
Mg + 2 HCl = MgCl2 + H2 
4. Electrolysis of water 
2 H2O = 2 H2 + O2 
5. Burning magnesium 
Mg + O2 = 2 MgO 
Hope this answers the question. Have a nice day.