（1）能使溴水褪色的无机物.如H2S Br2＋H2S=2HBr＋S↓ SO2 Br2＋SO2＋2H2O=H2SO4＋2HBr Na2SO3 Br2＋Na2SO3＋H2O=Na2SO4＋2HBr Mg粉（或Zn粉等）Br2＋Mg=MgBr2 NaOH等强碱Br2＋2NaOH=NaBr＋NaBrO＋H2O Na2CO3（或AgN...