A.向溴化亚铁溶液中通入少量氯气:2Fe2++Cl2===2Fe3++2Cl- |
B.苯酚钠溶液中通入少量CO2:2C6H5O-+CO2+H2O―→2C6H5OH+CO |
C.向硫酸氢钠溶液中滴入氢氧化钡溶液至中性:H++SO+Ba2++OH-===BaSO4↓+H2O |
D.将氢氧化铁粉末加入氢碘酸中:Fe(OH)3+3H+===Fe3++3H2O |
A.NaHCO3与Ca (OH)2 | B.Ba(OH)2与H2SO4 |
C.HCl与Na2CO3 | D.Ca(HCO3)2与NaOH |
A.在KHSO4溶液中加入氢氧化钡溶液至SO42-沉淀完全: Ba2++OH-+H++SO42-=BaSO4↓+H2O |
B.Na2O2与H2O反应生成O2:Na2O2 + H2O= 2Na+ + 2OH- + O2↑ |
C.将氯气溶于水制备次氯酸:Cl2 + H2O= 2H+ + Cl- + ClO- |
D.用惰性电极电解饱和氯化镁溶液:2Cl-+ 2H2O 2OH- + H2↑+ Cl2↑ |
A.将Fe(OH)3溶于HI溶液中:Fe(OH)3+3H+=Fe3++3H2O |
B.NaHCO3溶液水解:HCO3-+H2O CO32-+H3O+ |
C.用浓硫酸酸化的KMnO4溶液与H2O2反应,证明H2O2具有还原性: 2MnO+ 6H+ + 5H2O2= 2Mn2+ + 5O2↑ + 8H2O |
D.向Ba(HCO3)2溶液中加入少量的NaOH溶液 Ba2++2HCO3-+2OH-=BaCO3↓+CO32-+2H2O |
A.CH3COO— + H2OCH3COOH + OH— | B.NH4+ + H2ONH4OH + H+ |
C.S2- + 2H2OH2S+2OH- | D.HCO3- + H2O H3O++CO32- |
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