__________________________________________________________________。
f答案：AlO－2＋CO2＋2H2OAlOH3↓＋HCO－312．FeBr2溶液中通入少量氯气________________________________________________________________________。答案：2Fe2＋＋Cl22Fe3＋＋2Cl－13．向污水中投放明矾，生成能凝聚悬浮物的胶体
________________________________________________________________________。答案：Al3＋＋3H2OAlOH3胶体＋3H＋14．少量SO2通入苯酚钠溶液中________________________________________________________________________。答案：2C6H5O－＋SO2＋H2O2C6H5OH＋SO23－15．等体积、等浓度的CaHCO32溶液和NaOH溶液混合________________________________________________________________________。答案：Ca2＋＋HCO－3＋OH－CaCO3↓＋H2O16．用NaOH溶液除去铝表面的氧化膜
________________________________________________________________________。答案：Al2O3＋2OH－2AlO－2＋H2O17．向明矾溶液中加入过量的BaOH2溶液________________________________________________________________________。答案：Al3＋＋2SO24－＋2Ba2＋＋4OH－AlO－2＋2H2O＋2BaSO4↓18．小苏打与NaOH溶液混合
________________________________________________________________________。答案：HCO－3＋OH－CO23－＋H2O19．将Al片放入NaOH溶液中
________________________________________________________________________。答案：2Al＋2OH－＋2H2O2AlO－2＋3H2↑20．CuSO4溶液吸收H2S气体________________________________________________________________________。答案：Cu2＋＋H2S2H＋＋CuS↓21．用浓盐酸与M
O2反应制取少量Cl2________________________________________________________________________。答案：4H＋＋2Cl－＋M
O2△2H2O＋Cl2↑＋M
2＋22．用稀NaOH溶液吸收NO2________________________________________________________________________。答案：2NO2＋2OH－NO－3＋NO－2＋H2O23．用惰性电极电解熔融NaCl
________________________________________________________________________。答案：2Na＋＋2Cl－电解2Na＋Cl2↑24．淀粉碘化钾溶液在空气中变蓝
________________________________________________________________________。答案：4I－＋O2＋2H2O2I2＋4OH－25．漂白粉溶液在空气中失效
________________________________________________________________________。答案：Ca2＋＋2ClO－＋CO2＋H2OCaCO3↓＋2HClO、2HClO光2HCl＋O2↑26．将Cl2溶于水制备HClO________________________________________________________________________。答案：Cl2＋H2OH＋＋Cl－＋HClO27．FeSO4溶液中加入用H2SO4酸化的H2O2溶液________________________________________________________________________。答案：2Fe2＋＋2H＋＋H2O22Fe3＋＋2H2O28．FeCl3溶液与Cu反应
f________________________________________________________________________。答案r