1) MgO+...-->MgCO3
2 )...+SO2-->Na2SO3+...
3 )Al2O3+...-->Al(So4)3
4) ...+...-->Fe(No3)3+H2)
5)KOH+...-->K3PO4+...
6)CiSO4-->FeSo4-->Fe(OH)2-->Fe(NO3)2-->CO2


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