For the chemical reaction 5Br⊖+BrO⊖3+6H⊕→3Br2+3H2O
Rate = k[Br⊖][BrO⊖3][H⊕]2 The molecularity and order of reaction with respect to [Br⊖] is:
5Br⊖+BrO⊖3+6H⊕→3Br2+3H2O
5 1 6
Rate = k[Br⊖][BrO⊖3][H⊕]2
so molecularity and order of reaction with respect to [Br⊖] is 5,1