NaOH使溴水褪色的原理(与碱性溶液反应而使溴水褪色):Br2+2NaOH=NaBr+NaBrO+H2O(或3Br2+6NaOH=5NaBr+NaBrO3+3H2O)
SO2使溴水褪色的原理(与较强的无机还原剂发生反应而使溴水褪色):Br2+SO2+2H2O=2HBr+H2SO4
NaOH使溴水褪色的原理(与碱性溶液反应而使溴水褪色):Br2+2NaOH=NaBr+NaBrO+H2O(或3Br2+6NaOH=5NaBr+NaBrO3+3H2O)
SO2使溴水褪色的原理(与较强的无机还原剂发生反应而使溴水褪色):Br2+SO2+2H2O=2HBr+H2SO4