For the first reaction pathway: SO2 ---> SO3 ---> X ---> BaSO4 1) X could be either BaSO3 or BaS2O5 2) The final product is BaSO4 3) The overall reaction would be: SO2 + O2 ---> 2SO3; SO3 + BaOHOHOH2 ---> BaSO4 + H2O
For the second reaction pathway: P2O3 + O2 ---> K3PO4 ---> Ca3PO4PO4PO42 1) X could be KPO4 2) The final product is Ca3PO4PO4PO42 3) The overall reaction would be: 4P2O3 + 5O2 ---> 2K3PO4; K3PO4 + CaCl2 ---> Ca3PO4PO4PO42 + KCl
For the third reaction pathway: Al2SO4SO4SO43 ---> AlOHOHOH3 ---> X ---> AlCl 1) X could be Al2O3 or Al2O3•2H2O 2) The final product is AlCl3 3) The overall reaction would be: 2Al2SO4SO4SO43 + 6NaOH ---> 2AlOHOHOH3 + 3Na2SO4SO4SO4; AlOHOHOH3 + HCl ---> AlCl3 + 3H2O
For the first reaction pathway: SO2 ---> SO3 ---> X ---> BaSO4
1) X could be either BaSO3 or BaS2O5
2) The final product is BaSO4
3) The overall reaction would be: SO2 + O2 ---> 2SO3; SO3 + BaOHOHOH2 ---> BaSO4 + H2O
For the second reaction pathway: P2O3 + O2 ---> K3PO4 ---> Ca3PO4PO4PO42
1) X could be KPO4
2) The final product is Ca3PO4PO4PO42
3) The overall reaction would be: 4P2O3 + 5O2 ---> 2K3PO4; K3PO4 + CaCl2 ---> Ca3PO4PO4PO42 + KCl
For the third reaction pathway: Al2SO4SO4SO43 ---> AlOHOHOH3 ---> X ---> AlCl
1) X could be Al2O3 or Al2O3•2H2O
2) The final product is AlCl3
3) The overall reaction would be: 2Al2SO4SO4SO43 + 6NaOH ---> 2AlOHOHOH3 + 3Na2SO4SO4SO4; AlOHOHOH3 + HCl ---> AlCl3 + 3H2O