Br2->HBr->KBr->Br2->NaBr->NaCl
1) Br 2 + H2= 2HBr 2) HBr + KOH = KBr + H2O 3) KBr + K2MnO4 = Br2 + MnBr2 + KBr + H2O 4) Br2 + 2NaCl = 2NaBr + Cl2 5) NaBr + HCl = NaCl + HBr