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¢Ú2Na2O2 + 2H2O =" 4NaOH" + O2¡ü
¢ÛNa2O+ H2O ="2NaOH"
¢Ü3Fe+4H2O Fe3O4+4H2
¢Ý2H2O 2H2¡ü+ O2¡ü
¢Þ2F2 + 2H2O =" 4HF" + O2
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£¨¢ò£©2Fe3+ + Fe = 3Fe2+  ;CO2  + OH- = HCO3- ; Al3+ + 4OH- = AlO2- + 2H2O
£¨¢ó£©2SO2 + O2»ò 2SO3 ;Cl2 + 2NaOH =" NaCl" + NaClO + H2O;
3Cu + 8HNO3(Ï¡) = 3Cu(NO3)2 + 2NO¡ü+ 4H2O

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£¨¢ò£©2Fe3+ + Fe = 3Fe2+  ;CO2  + OH- = HCO3- ; Al3+ + 4OH- = AlO2- + 2H2O
£¨¢ó£©2SO2 + O2»ò 2SO3 ;Cl2 + 2NaOH =" NaCl" + NaClO + H2O;
3Cu + 8HNO3(Ï¡) = 3Cu(NO3)2 + 2NO¡ü+ 4H2O
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