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A. ̼Ëá¸ÆºÍÑÎËá·´Ó¦£ºCO32- +2H+= CO2¡ü +H2O

B. ÏòNaOHÈÜÒºÖеμÓÉÙÁ¿Ca(HCO3)2ÈÜÒº£ºCa2+ +HCO3- +OH- = CaCO3¡ý+H2O

C. Í­·ÛÓëÂÈ»¯ÌúÈÜÒº·´Ó¦£ºCu + Fe3+ = Fe2+ + Cu2+

D. ÏòBa(OH)2ÈÜÒºÓëH2SO4·´Ó¦£ºBa2+ + 2OH- + 2H+ +SO42- = BaSO4¡ý + 2H2O

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