﹡﹡﹡﹡﹡﹡﹡﹡﹡﹡化学方程式总结﹡﹡﹡﹡﹡﹡﹡﹡﹡﹡2Na+O2===Na2O22Na+Cl2===2NaCl2Na+2HCl===2NaCl+H2↑§1◆碱金属元素4Na+O2===2Na2O2Na2O+O22Na2O2(淡黄色)2Na+S===Na2S(爆炸)2Na+2H2O===2NaOH+H2↑2Na2O2+2H2O===4NaOH+O2↑2Na2O2+2CO2===2Na2CO3+O2CuSO4+2Na+2H2O====Cu(OH)2↓+Na2SO4+H2↑Na2O+H2O===2NaOH2Na2O2+4HCl===4NaCl+O2↑+2H2ONaHCO3+HCl===NaCl+H2O+CO2↑NaHCO3+NaOH===Na2CO3+H2ONa2CO3+HCl(少)====NaCl+NaHCO3Na2CO3+2HCl(多)====2NaCl+H2O+CO2↑2NaHCO3Na2CO3+H2O+CO2↑4Li+O22Li2ONaHCO3(少)+Ca(OH)2===CaCO3↓+H2O+NaOH2NaHCO3(多)+Ca(OH)2===CaCO3↓+2H2O+Na2CO3NaOH(少)+Ca(HCO3)2===CaCO3↓+H2O+NaHCO32NaOH(多)+Ca(HCO3)2===CaCO3↓+2H2O+Na2CO32K+2H2O===2KOH+H2↑Na2CO3+H2O+CO2=2NaHCO3CO2(少量)+Ca(OH)2===CaCO3↓+H2O2CO2(过量)+Ca(OH)2===Ca(HCO3)2§2卤族元素Cl2+CuCuCl2(棕黄色)3Cl2+2Fe2FeCl3(棕黄色)Cl2+2Na2NaCl(白烟)Cl2+H22HCl(苍白色火焰)Cl2+H2O==HCl+HClOCl2+2NaOH===NaCl+NaClO+H2O2Cl2+2Ca(OH)2