NaOH, Ba(NO3)2, Fe(OH)2, Al, Fe2O3, KNO3, K2CO3.
2Na+ + 2OH− + 2H+ + SO4 2− = >2Na+ + SO4 2− + 2H2
2Al + 6H+ + 3SO4 2- = > 2Al + 3SO4 2- +3H2O
NaOH, Ba(NO3)2, Fe(OH)2, Al, Fe2O3, KNO3, K2CO3.
2Na+ + 2OH− + 2H+ + SO4 2− = >2Na+ + SO4 2− + 2H2
2Al + 6H+ + 3SO4 2- = > 2Al + 3SO4 2- +3H2O