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最佳答案:Ca(HCO3)2+NaOH=CaCO3+H2OCa+2+2HCO3-1 +OH-1=Ca+2+CO3-2+H2O
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最佳答案:CH2BrCOOH+2NaOH=CH2OHCOONa+NaBr+H2O4HCl(浓)+MnO2=(加热)MnCl2+Cl2(气体符号)+2H2O3NaClO+2