3BrF3+5H2O=Br2+HBrO3+O2+9HF
2HF+Na2CO3=2NaF+H2O+CO2↑
合起来应该是6BrF3+H2O+9Na2CO3=2Br2+2HBrO3+2O2+18NaF+9CO2↑