(1) Br-＋BrO3-＋2H+ → HBrO2＋HBrO (2) Br-＋HBrO2＋H+ → 2HBrO (3) HBrO2＋BrO3-＋H+ → BrO2.＋H2O (4) BrO2.＋Ce3+＋H+ → HBrO2＋Ce4+ (5) 2HBrO2 → BrO3-＋H+＋HBrO (6) 4Ce4+＋BrCH(COOH)2＋H2O＋HBrO 2Br...