the answer is A, B, C all, how?? this is multiple selected question. thanks Share with your friends Share 0 Vartika Jain answered this Dear Student, They both are ionisation isomers and can be differentiated by reacting with different compounds. [Co(NH3)5Br]SO4 will react with BaCl2 and PbCl2 giving ppt of BaSO4 and PbSO4 while [Co(NH3)5SO4]Br will not give any ppt with these reagents. On the other hand, [Co(NH3)5SO4]Br will give ppt of AgBr with AgNO3 and [Co(NH3)5Br]SO4 will not give any ppt. Therefore, correct answer is (A), (B) and (C)[Co(NH3)5Br]SO4 + BaCl2 → [Co(NH3)5Br]Cl2 + BaSO4[Co(NH3)5Br]SO4 + PbCl2 → [Co(NH3)5Br]Cl2 + PbSO4 [Co(NH3)5SO4]Br + AgNO3→ [Co(NH3)5SO4](NO3) + AgBr 1 View Full Answer