摘要: ②: + 2NaOH → NaO-C6H4-COONa + 2H2O 32 ;放热 (2)2Al2O3=电解=4Al + 3O2↑ (3)2Al+2OH-+2H2O=2AlO2-+3H2↑, (4) Fe3O4 + 8 H+ ==== Fe2+ + 2Fe3+ + 4H2O 2 +O2 + 2H2O ==== 4Fe(OH)3

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