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(2) 2 Fe3++ Cu = 2Fe2++ Cu2+ (2·Ö)ÈÜÒº(2·Ö£¬ÓÃNaOHÈÜÒºÒ²¸ø·Ö)
(3) ¢Ù¢Ú¢Ü¢ß(2·Ö)   2 Fe3+ + Fe=" 3" Fe2+ (2·Ö)Fe + Cu2+= Fe2++ Cu (2·Ö) Fe + 2H+= Fe2++ H2(2·Ö) 2Fe2++ Cl2=2Cl-+2Fe3+(2·Ö)

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