1) 2Na+2H2O=2NaOH+H22)S+2H2SO4=3SO2+2H2O3)MnO2+4HCl=MnCl2+Cl2+2H2O4)Cu+2H2SO4=CuSO4+SO2+2H2O5)Cl2+2KOH=KCl+KClO+H2O
1) 2Na+2H2O=2NaOH+H2
2)S+2H2SO4=3SO2+2H2O
3)MnO2+4HCl=MnCl2+Cl2+2H2O
4)Cu+2H2SO4=CuSO4+SO2+2H2O
5)Cl2+2KOH=KCl+KClO+H2O